Home / 87,790.68-121,150.28-47,503.58

Finding the Fourth Proportional to 87,790.68, 121,150.28 and 47,503.58

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Solution

The fourth proportional to 87,790.68, 121,150.28 and 47,503.58 is: 65,554.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,790.68 : 121,150.28 = 47,503.58 : x
  2. Step 2: Convert to fraction form
    87,790.68/121,150.28 = 47,503.58/x
  3. Step 3: Cross multiply
    87,790.68x = 121,150.28 × 47,503.58
  4. Step 4: Simplify right side
    87,790.68x = 5,755,072,018.00
  5. Step 5: Solve for x
    x = 5,755,072,018.00/87,790.68
  6. Step 6: Final answer
    x = 65,554.48

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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.