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Finding the Fourth Proportional to 65,776.98, 98,690.16 and 39,500.58

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Solution

The fourth proportional to 65,776.98, 98,690.16 and 39,500.58 is: 59,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,776.98 : 98,690.16 = 39,500.58 : x
  2. Step 2: Convert to fraction form
    65,776.98/98,690.16 = 39,500.58/x
  3. Step 3: Cross multiply
    65,776.98x = 98,690.16 × 39,500.58
  4. Step 4: Simplify right side
    65,776.98x = 3,898,318,560.29
  5. Step 5: Solve for x
    x = 3,898,318,560.29/65,776.98
  6. Step 6: Final answer
    x = 59,265.70

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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.