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Finding the Fourth Proportional to 78,668.20, 118,045.50 and 37,114.12

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Solution

The fourth proportional to 78,668.20, 118,045.50 and 37,114.12 is: 55,691.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,668.20 : 118,045.50 = 37,114.12 : x
  2. Step 2: Convert to fraction form
    78,668.20/118,045.50 = 37,114.12/x
  3. Step 3: Cross multiply
    78,668.20x = 118,045.50 × 37,114.12
  4. Step 4: Simplify right side
    78,668.20x = 4,381,154,852.46
  5. Step 5: Solve for x
    x = 4,381,154,852.46/78,668.20
  6. Step 6: Final answer
    x = 55,691.56

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1.5x scale

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.