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Finding the Fourth Proportional to 78,834.59, 118,248.57 and 36,700.19

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Solution

The fourth proportional to 78,834.59, 118,248.57 and 36,700.19 is: 55,048.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,834.59 : 118,248.57 = 36,700.19 : x
  2. Step 2: Convert to fraction form
    78,834.59/118,248.57 = 36,700.19/x
  3. Step 3: Cross multiply
    78,834.59x = 118,248.57 × 36,700.19
  4. Step 4: Simplify right side
    78,834.59x = 4,339,744,986.23
  5. Step 5: Solve for x
    x = 4,339,744,986.23/78,834.59
  6. Step 6: Final answer
    x = 55,048.74

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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.