Home / 87,342.40-120,513.25-55,558.00

Finding the Fourth Proportional to 87,342.40, 120,513.25 and 55,558.00

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Solution

The fourth proportional to 87,342.40, 120,513.25 and 55,558.00 is: 76,657.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,342.40 : 120,513.25 = 55,558.00 : x
  2. Step 2: Convert to fraction form
    87,342.40/120,513.25 = 55,558.00/x
  3. Step 3: Cross multiply
    87,342.40x = 120,513.25 × 55,558.00
  4. Step 4: Simplify right side
    87,342.40x = 6,695,475,363.59
  5. Step 5: Solve for x
    x = 6,695,475,363.59/87,342.40
  6. Step 6: Final answer
    x = 76,657.79

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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.