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Finding the Fourth Proportional to 78,363.30, 117,350.55 and 62,811.30

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Solution

The fourth proportional to 78,363.30, 117,350.55 and 62,811.30 is: 94,061.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,363.30 : 117,350.55 = 62,811.30 : x
  2. Step 2: Convert to fraction form
    78,363.30/117,350.55 = 62,811.30/x
  3. Step 3: Cross multiply
    78,363.30x = 117,350.55 × 62,811.30
  4. Step 4: Simplify right side
    78,363.30x = 7,370,940,601.22
  5. Step 5: Solve for x
    x = 7,370,940,601.22/78,363.30
  6. Step 6: Final answer
    x = 94,061.13

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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.