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Finding the Fourth Proportional to 79,049.80, 118,658.16 and 77,264.92

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Solution

The fourth proportional to 79,049.80, 118,658.16 and 77,264.92 is: 115,978.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,049.80 : 118,658.16 = 77,264.92 : x
  2. Step 2: Convert to fraction form
    79,049.80/118,658.16 = 77,264.92/x
  3. Step 3: Cross multiply
    79,049.80x = 118,658.16 × 77,264.92
  4. Step 4: Simplify right side
    79,049.80x = 9,168,113,239.75
  5. Step 5: Solve for x
    x = 9,168,113,239.75/79,049.80
  6. Step 6: Final answer
    x = 115,978.96

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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.