Home / 87,543.64-131,303.04-49,981.78

Finding the Fourth Proportional to 87,543.64, 131,303.04 and 49,981.78

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Solution

The fourth proportional to 87,543.64, 131,303.04 and 49,981.78 is: 74,965.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,543.64 : 131,303.04 = 49,981.78 : x
  2. Step 2: Convert to fraction form
    87,543.64/131,303.04 = 49,981.78/x
  3. Step 3: Cross multiply
    87,543.64x = 131,303.04 × 49,981.78
  4. Step 4: Simplify right side
    87,543.64x = 6,562,759,658.61
  5. Step 5: Solve for x
    x = 6,562,759,658.61/87,543.64
  6. Step 6: Final answer
    x = 74,965.58

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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.