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Finding the Fourth Proportional to 60,720.40, 91,253.40 and 53,117.20

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Solution

The fourth proportional to 60,720.40, 91,253.40 and 53,117.20 is: 79,826.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,720.40 : 91,253.40 = 53,117.20 : x
  2. Step 2: Convert to fraction form
    60,720.40/91,253.40 = 53,117.20/x
  3. Step 3: Cross multiply
    60,720.40x = 91,253.40 × 53,117.20
  4. Step 4: Simplify right side
    60,720.40x = 4,847,125,098.48
  5. Step 5: Solve for x
    x = 4,847,125,098.48/60,720.40
  6. Step 6: Final answer
    x = 79,826.96

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