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Finding the Fourth Proportional to 65,737.80, 98,606.70 and 57,702.60

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Solution

The fourth proportional to 65,737.80, 98,606.70 and 57,702.60 is: 86,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,737.80 : 98,606.70 = 57,702.60 : x
  2. Step 2: Convert to fraction form
    65,737.80/98,606.70 = 57,702.60/x
  3. Step 3: Cross multiply
    65,737.80x = 98,606.70 × 57,702.60
  4. Step 4: Simplify right side
    65,737.80x = 5,689,862,967.42
  5. Step 5: Solve for x
    x = 5,689,862,967.42/65,737.80
  6. Step 6: Final answer
    x = 86,553.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.