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Finding the Fourth Proportional to 79,487.04, 109,700.55 and 47,658.90

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Solution

The fourth proportional to 79,487.04, 109,700.55 and 47,658.90 is: 65,774.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,487.04 : 109,700.55 = 47,658.90 : x
  2. Step 2: Convert to fraction form
    79,487.04/109,700.55 = 47,658.90/x
  3. Step 3: Cross multiply
    79,487.04x = 109,700.55 × 47,658.90
  4. Step 4: Simplify right side
    79,487.04x = 5,228,207,542.40
  5. Step 5: Solve for x
    x = 5,228,207,542.40/79,487.04
  6. Step 6: Final answer
    x = 65,774.34

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1.5x scale

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.