Home / 71,287.20-98,387.37-40,660.35

Finding the Fourth Proportional to 71,287.20, 98,387.37 and 40,660.35

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Solution

The fourth proportional to 71,287.20, 98,387.37 and 40,660.35 is: 56,117.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,287.20 : 98,387.37 = 40,660.35 : x
  2. Step 2: Convert to fraction form
    71,287.20/98,387.37 = 40,660.35/x
  3. Step 3: Cross multiply
    71,287.20x = 98,387.37 × 40,660.35
  4. Step 4: Simplify right side
    71,287.20x = 4,000,464,899.78
  5. Step 5: Solve for x
    x = 4,000,464,899.78/71,287.20
  6. Step 6: Final answer
    x = 56,117.58

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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.