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Finding the Fourth Proportional to 69,102.48, 103,520.10 and 57,875.88

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Solution

The fourth proportional to 69,102.48, 103,520.10 and 57,875.88 is: 86,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,102.48 : 103,520.10 = 57,875.88 : x
  2. Step 2: Convert to fraction form
    69,102.48/103,520.10 = 57,875.88/x
  3. Step 3: Cross multiply
    69,102.48x = 103,520.10 × 57,875.88
  4. Step 4: Simplify right side
    69,102.48x = 5,991,316,885.19
  5. Step 5: Solve for x
    x = 5,991,316,885.19/69,102.48
  6. Step 6: Final answer
    x = 86,701.91

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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.