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Finding the Fourth Proportional to 65,159.28, 89,899.20 and 38,293.20

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Solution

The fourth proportional to 65,159.28, 89,899.20 and 38,293.20 is: 52,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,159.28 : 89,899.20 = 38,293.20 : x
  2. Step 2: Convert to fraction form
    65,159.28/89,899.20 = 38,293.20/x
  3. Step 3: Cross multiply
    65,159.28x = 89,899.20 × 38,293.20
  4. Step 4: Simplify right side
    65,159.28x = 3,442,528,045.44
  5. Step 5: Solve for x
    x = 3,442,528,045.44/65,159.28
  6. Step 6: Final answer
    x = 52,832.51

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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.