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Finding the Fourth Proportional to 82,888, 124,332.87 and 66,353.15

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Solution

The fourth proportional to 82,888, 124,332.87 and 66,353.15 is: 99,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,888 : 124,332.87 = 66,353.15 : x
  2. Step 2: Convert to fraction form
    82,888/124,332.87 = 66,353.15/x
  3. Step 3: Cross multiply
    82,888x = 124,332.87 × 66,353.15
  4. Step 4: Simplify right side
    82,888x = 8,249,877,573.04
  5. Step 5: Solve for x
    x = 8,249,877,573.04/82,888
  6. Step 6: Final answer
    x = 99,530.42

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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.