Home / 87,790.17-121,152.21-51,967.11

Finding the Fourth Proportional to 87,790.17, 121,152.21 and 51,967.11

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Solution

The fourth proportional to 87,790.17, 121,152.21 and 51,967.11 is: 71,715.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,790.17 : 121,152.21 = 51,967.11 : x
  2. Step 2: Convert to fraction form
    87,790.17/121,152.21 = 51,967.11/x
  3. Step 3: Cross multiply
    87,790.17x = 121,152.21 × 51,967.11
  4. Step 4: Simplify right side
    87,790.17x = 6,295,930,223.81
  5. Step 5: Solve for x
    x = 6,295,930,223.81/87,790.17
  6. Step 6: Final answer
    x = 71,715.66

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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.