Home / 78,207.13-107,925.87-42,397.13

Finding the Fourth Proportional to 78,207.13, 107,925.87 and 42,397.13

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Solution

The fourth proportional to 78,207.13, 107,925.87 and 42,397.13 is: 58,508.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,207.13 : 107,925.87 = 42,397.13 : x
  2. Step 2: Convert to fraction form
    78,207.13/107,925.87 = 42,397.13/x
  3. Step 3: Cross multiply
    78,207.13x = 107,925.87 × 42,397.13
  4. Step 4: Simplify right side
    78,207.13x = 4,575,746,928.77
  5. Step 5: Solve for x
    x = 4,575,746,928.77/78,207.13
  6. Step 6: Final answer
    x = 58,508.05

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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.