Home / 82,812.06-124,220.16-30,221.55

Finding the Fourth Proportional to 82,812.06, 124,220.16 and 30,221.55

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Solution

The fourth proportional to 82,812.06, 124,220.16 and 30,221.55 is: 45,333.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,812.06 : 124,220.16 = 30,221.55 : x
  2. Step 2: Convert to fraction form
    82,812.06/124,220.16 = 30,221.55/x
  3. Step 3: Cross multiply
    82,812.06x = 124,220.16 × 30,221.55
  4. Step 4: Simplify right side
    82,812.06x = 3,754,125,776.45
  5. Step 5: Solve for x
    x = 3,754,125,776.45/82,812.06
  6. Step 6: Final answer
    x = 45,333.08

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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.