Home / 87,500.58-120,708.78-57,272.58

Finding the Fourth Proportional to 87,500.58, 120,708.78 and 57,272.58

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Solution

The fourth proportional to 87,500.58, 120,708.78 and 57,272.58 is: 79,008.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,500.58 : 120,708.78 = 57,272.58 : x
  2. Step 2: Convert to fraction form
    87,500.58/120,708.78 = 57,272.58/x
  3. Step 3: Cross multiply
    87,500.58x = 120,708.78 × 57,272.58
  4. Step 4: Simplify right side
    87,500.58x = 6,913,303,259.25
  5. Step 5: Solve for x
    x = 6,913,303,259.25/87,500.58
  6. Step 6: Final answer
    x = 79,008.66

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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.