Home / 83,021.79-124,658.10-66,332.28

Finding the Fourth Proportional to 83,021.79, 124,658.10 and 66,332.28

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Solution

The fourth proportional to 83,021.79, 124,658.10 and 66,332.28 is: 99,598.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,021.79 : 124,658.10 = 66,332.28 : x
  2. Step 2: Convert to fraction form
    83,021.79/124,658.10 = 66,332.28/x
  3. Step 3: Cross multiply
    83,021.79x = 124,658.10 × 66,332.28
  4. Step 4: Simplify right side
    83,021.79x = 8,268,855,993.47
  5. Step 5: Solve for x
    x = 8,268,855,993.47/83,021.79
  6. Step 6: Final answer
    x = 99,598.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.