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Finding the Fourth Proportional to 72,337.80, 99,860.78 and 48,178.96

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Solution

The fourth proportional to 72,337.80, 99,860.78 and 48,178.96 is: 66,510.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,337.80 : 99,860.78 = 48,178.96 : x
  2. Step 2: Convert to fraction form
    72,337.80/99,860.78 = 48,178.96/x
  3. Step 3: Cross multiply
    72,337.80x = 99,860.78 × 48,178.96
  4. Step 4: Simplify right side
    72,337.80x = 4,811,188,525.19
  5. Step 5: Solve for x
    x = 4,811,188,525.19/72,337.80
  6. Step 6: Final answer
    x = 66,510.02

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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.