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Finding the Fourth Proportional to 72,177.04, 99,604.28 and 42,369.04

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Solution

The fourth proportional to 72,177.04, 99,604.28 and 42,369.04 is: 58,469.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.04 : 99,604.28 = 42,369.04 : x
  2. Step 2: Convert to fraction form
    72,177.04/99,604.28 = 42,369.04/x
  3. Step 3: Cross multiply
    72,177.04x = 99,604.28 × 42,369.04
  4. Step 4: Simplify right side
    72,177.04x = 4,220,137,723.49
  5. Step 5: Solve for x
    x = 4,220,137,723.49/72,177.04
  6. Step 6: Final answer
    x = 58,469.25

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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.