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Finding the Fourth Proportional to 82,750.40, 124,125.60 and 43,319.60

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Solution

The fourth proportional to 82,750.40, 124,125.60 and 43,319.60 is: 64,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,750.40 : 124,125.60 = 43,319.60 : x
  2. Step 2: Convert to fraction form
    82,750.40/124,125.60 = 43,319.60/x
  3. Step 3: Cross multiply
    82,750.40x = 124,125.60 × 43,319.60
  4. Step 4: Simplify right side
    82,750.40x = 5,377,071,341.76
  5. Step 5: Solve for x
    x = 5,377,071,341.76/82,750.40
  6. Step 6: Final answer
    x = 64,979.40

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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.