Home / 84,019,686.40-126,029,529.60-20,194,278.40

Finding the Fourth Proportional to 84,019,686.40, 126,029,529.60 and 20,194,278.40

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Solution

The fourth proportional to 84,019,686.40, 126,029,529.60 and 20,194,278.40 is: 30,291,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,019,686.40 : 126,029,529.60 = 20,194,278.40 : x
  2. Step 2: Convert to fraction form
    84,019,686.40/126,029,529.60 = 20,194,278.40/x
  3. Step 3: Cross multiply
    84,019,686.40x = 126,029,529.60 × 20,194,278.40
  4. Step 4: Simplify right side
    84,019,686.40x = 2,545,075,407,363,440.50
  5. Step 5: Solve for x
    x = 2,545,075,407,363,440.50/84,019,686.40
  6. Step 6: Final answer
    x = 30,291,417.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.