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Finding the Fourth Proportional to 124,244.79, 186,310.08 and 39,989.40

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Solution

The fourth proportional to 124,244.79, 186,310.08 and 39,989.40 is: 59,965.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,244.79 : 186,310.08 = 39,989.40 : x
  2. Step 2: Convert to fraction form
    124,244.79/186,310.08 = 39,989.40/x
  3. Step 3: Cross multiply
    124,244.79x = 186,310.08 × 39,989.40
  4. Step 4: Simplify right side
    124,244.79x = 7,450,428,313.15
  5. Step 5: Solve for x
    x = 7,450,428,313.15/124,244.79
  6. Step 6: Final answer
    x = 59,965.72

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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.