Home / 87,719.16-121,053.68-53,715.24

Finding the Fourth Proportional to 87,719.16, 121,053.68 and 53,715.24

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Solution

The fourth proportional to 87,719.16, 121,053.68 and 53,715.24 is: 74,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,719.16 : 121,053.68 = 53,715.24 : x
  2. Step 2: Convert to fraction form
    87,719.16/121,053.68 = 53,715.24/x
  3. Step 3: Cross multiply
    87,719.16x = 121,053.68 × 53,715.24
  4. Step 4: Simplify right side
    87,719.16x = 6,502,426,734.53
  5. Step 5: Solve for x
    x = 6,502,426,734.53/87,719.16
  6. Step 6: Final answer
    x = 74,127.79

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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.