Home / 78,504.90-108,337.56-42,695.70

Finding the Fourth Proportional to 78,504.90, 108,337.56 and 42,695.70

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Solution

The fourth proportional to 78,504.90, 108,337.56 and 42,695.70 is: 58,920.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,504.90 : 108,337.56 = 42,695.70 : x
  2. Step 2: Convert to fraction form
    78,504.90/108,337.56 = 42,695.70/x
  3. Step 3: Cross multiply
    78,504.90x = 108,337.56 × 42,695.70
  4. Step 4: Simplify right side
    78,504.90x = 4,625,547,853.75
  5. Step 5: Solve for x
    x = 4,625,547,853.75/78,504.90
  6. Step 6: Final answer
    x = 58,920.50

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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.