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Finding the Fourth Proportional to 65,139.60, 97,690.20 and 25,683.60

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Solution

The fourth proportional to 65,139.60, 97,690.20 and 25,683.60 is: 38,517.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,139.60 : 97,690.20 = 25,683.60 : x
  2. Step 2: Convert to fraction form
    65,139.60/97,690.20 = 25,683.60/x
  3. Step 3: Cross multiply
    65,139.60x = 97,690.20 × 25,683.60
  4. Step 4: Simplify right side
    65,139.60x = 2,509,036,020.72
  5. Step 5: Solve for x
    x = 2,509,036,020.72/65,139.60
  6. Step 6: Final answer
    x = 38,517.83

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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.