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Finding the Fourth Proportional to 82,889.76, 124,335.51 and 66,354.90

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Solution

The fourth proportional to 82,889.76, 124,335.51 and 66,354.90 is: 99,533.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,889.76 : 124,335.51 = 66,354.90 : x
  2. Step 2: Convert to fraction form
    82,889.76/124,335.51 = 66,354.90/x
  3. Step 3: Cross multiply
    82,889.76x = 124,335.51 × 66,354.90
  4. Step 4: Simplify right side
    82,889.76x = 8,250,270,332.50
  5. Step 5: Solve for x
    x = 8,250,270,332.50/82,889.76
  6. Step 6: Final answer
    x = 99,533.05

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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.