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Finding the Fourth Proportional to 65,306.88, 89,963.52 and 47,349.12

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Solution

The fourth proportional to 65,306.88, 89,963.52 and 47,349.12 is: 65,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,306.88 : 89,963.52 = 47,349.12 : x
  2. Step 2: Convert to fraction form
    65,306.88/89,963.52 = 47,349.12/x
  3. Step 3: Cross multiply
    65,306.88x = 89,963.52 × 47,349.12
  4. Step 4: Simplify right side
    65,306.88x = 4,259,693,504.10
  5. Step 5: Solve for x
    x = 4,259,693,504.10/65,306.88
  6. Step 6: Final answer
    x = 65,225.80

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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.