Home / 78,220.04-107,944.14-42,409.74

Finding the Fourth Proportional to 78,220.04, 107,944.14 and 42,409.74

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Solution

The fourth proportional to 78,220.04, 107,944.14 and 42,409.74 is: 58,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,220.04 : 107,944.14 = 42,409.74 : x
  2. Step 2: Convert to fraction form
    78,220.04/107,944.14 = 42,409.74/x
  3. Step 3: Cross multiply
    78,220.04x = 107,944.14 × 42,409.74
  4. Step 4: Simplify right side
    78,220.04x = 4,577,882,911.92
  5. Step 5: Solve for x
    x = 4,577,882,911.92/78,220.04
  6. Step 6: Final answer
    x = 58,525.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.