Home / 87,812.60-121,173.72-51,996.20

Finding the Fourth Proportional to 87,812.60, 121,173.72 and 51,996.20

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Solution

The fourth proportional to 87,812.60, 121,173.72 and 51,996.20 is: 71,750.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.60 : 121,173.72 = 51,996.20 : x
  2. Step 2: Convert to fraction form
    87,812.60/121,173.72 = 51,996.20/x
  3. Step 3: Cross multiply
    87,812.60x = 121,173.72 × 51,996.20
  4. Step 4: Simplify right side
    87,812.60x = 6,300,572,979.86
  5. Step 5: Solve for x
    x = 6,300,572,979.86/87,812.60
  6. Step 6: Final answer
    x = 71,750.22

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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.