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Finding the Fourth Proportional to 65,113.60, 97,879.20 and 60,491.20

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Solution

The fourth proportional to 65,113.60, 97,879.20 and 60,491.20 is: 90,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,113.60 : 97,879.20 = 60,491.20 : x
  2. Step 2: Convert to fraction form
    65,113.60/97,879.20 = 60,491.20/x
  3. Step 3: Cross multiply
    65,113.60x = 97,879.20 × 60,491.20
  4. Step 4: Simplify right side
    65,113.60x = 5,920,830,263.04
  5. Step 5: Solve for x
    x = 5,920,830,263.04/65,113.60
  6. Step 6: Final answer
    x = 90,930.78

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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.