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Finding the Fourth Proportional to 82,884.78, 124,328.03 and 66,349.92

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Solution

The fourth proportional to 82,884.78, 124,328.03 and 66,349.92 is: 99,525.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,884.78 : 124,328.03 = 66,349.92 : x
  2. Step 2: Convert to fraction form
    82,884.78/124,328.03 = 66,349.92/x
  3. Step 3: Cross multiply
    82,884.78x = 124,328.03 × 66,349.92
  4. Step 4: Simplify right side
    82,884.78x = 8,249,154,844.26
  5. Step 5: Solve for x
    x = 8,249,154,844.26/82,884.78
  6. Step 6: Final answer
    x = 99,525.57

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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.