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Finding the Fourth Proportional to 83,460.74, 124,833.39 and 77,403.21

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Solution

The fourth proportional to 83,460.74, 124,833.39 and 77,403.21 is: 115,773.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,460.74 : 124,833.39 = 77,403.21 : x
  2. Step 2: Convert to fraction form
    83,460.74/124,833.39 = 77,403.21/x
  3. Step 3: Cross multiply
    83,460.74x = 124,833.39 × 77,403.21
  4. Step 4: Simplify right side
    83,460.74x = 9,662,504,844.89
  5. Step 5: Solve for x
    x = 9,662,504,844.89/83,460.74
  6. Step 6: Final answer
    x = 115,773.05

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1.5x scale

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.