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Finding the Fourth Proportional to 65,702.52, 90,669.45 and 35,487.84

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Solution

The fourth proportional to 65,702.52, 90,669.45 and 35,487.84 is: 48,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,702.52 : 90,669.45 = 35,487.84 : x
  2. Step 2: Convert to fraction form
    65,702.52/90,669.45 = 35,487.84/x
  3. Step 3: Cross multiply
    65,702.52x = 90,669.45 × 35,487.84
  4. Step 4: Simplify right side
    65,702.52x = 3,217,662,934.49
  5. Step 5: Solve for x
    x = 3,217,662,934.49/65,702.52
  6. Step 6: Final answer
    x = 48,973.20

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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.