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Finding the Fourth Proportional to 78,358.90, 108,134.15 and 44,366.50

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Solution

The fourth proportional to 78,358.90, 108,134.15 and 44,366.50 is: 61,225.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,358.90 : 108,134.15 = 44,366.50 : x
  2. Step 2: Convert to fraction form
    78,358.90/108,134.15 = 44,366.50/x
  3. Step 3: Cross multiply
    78,358.90x = 108,134.15 × 44,366.50
  4. Step 4: Simplify right side
    78,358.90x = 4,797,533,606.56
  5. Step 5: Solve for x
    x = 4,797,533,606.56/78,358.90
  6. Step 6: Final answer
    x = 61,225.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.