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Finding the Fourth Proportional to 72,373.11, 99,846.15 and 45,133.17

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Solution

The fourth proportional to 72,373.11, 99,846.15 and 45,133.17 is: 62,265.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,373.11 : 99,846.15 = 45,133.17 : x
  2. Step 2: Convert to fraction form
    72,373.11/99,846.15 = 45,133.17/x
  3. Step 3: Cross multiply
    72,373.11x = 99,846.15 × 45,133.17
  4. Step 4: Simplify right side
    72,373.11x = 4,506,373,261.80
  5. Step 5: Solve for x
    x = 4,506,373,261.80/72,373.11
  6. Step 6: Final answer
    x = 62,265.85

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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.