Home / 87,318.35-120,500.40-49,075.66

Finding the Fourth Proportional to 87,318.35, 120,500.40 and 49,075.66

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Solution

The fourth proportional to 87,318.35, 120,500.40 and 49,075.66 is: 67,725.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,318.35 : 120,500.40 = 49,075.66 : x
  2. Step 2: Convert to fraction form
    87,318.35/120,500.40 = 49,075.66/x
  3. Step 3: Cross multiply
    87,318.35x = 120,500.40 × 49,075.66
  4. Step 4: Simplify right side
    87,318.35x = 5,913,637,195.81
  5. Step 5: Solve for x
    x = 5,913,637,195.81/87,318.35
  6. Step 6: Final answer
    x = 67,725.02

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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.