Home / 71,287.05-98,360.38-42,602.40

Finding the Fourth Proportional to 71,287.05, 98,360.38 and 42,602.40

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Solution

The fourth proportional to 71,287.05, 98,360.38 and 42,602.40 is: 58,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,287.05 : 98,360.38 = 42,602.40 : x
  2. Step 2: Convert to fraction form
    71,287.05/98,360.38 = 42,602.40/x
  3. Step 3: Cross multiply
    71,287.05x = 98,360.38 × 42,602.40
  4. Step 4: Simplify right side
    71,287.05x = 4,190,388,252.91
  5. Step 5: Solve for x
    x = 4,190,388,252.91/71,287.05
  6. Step 6: Final answer
    x = 58,781.90

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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.