Home / 87,803.75-121,168.22-47,516.64

Finding the Fourth Proportional to 87,803.75, 121,168.22 and 47,516.64

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Solution

The fourth proportional to 87,803.75, 121,168.22 and 47,516.64 is: 65,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,803.75 : 121,168.22 = 47,516.64 : x
  2. Step 2: Convert to fraction form
    87,803.75/121,168.22 = 47,516.64/x
  3. Step 3: Cross multiply
    87,803.75x = 121,168.22 × 47,516.64
  4. Step 4: Simplify right side
    87,803.75x = 5,757,506,451.60
  5. Step 5: Solve for x
    x = 5,757,506,451.60/87,803.75
  6. Step 6: Final answer
    x = 65,572.45

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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.