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Finding the Fourth Proportional to 69,045.84, 103,402.62 and 39,373.74

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Solution

The fourth proportional to 69,045.84, 103,402.62 and 39,373.74 is: 58,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,045.84 : 103,402.62 = 39,373.74 : x
  2. Step 2: Convert to fraction form
    69,045.84/103,402.62 = 39,373.74/x
  3. Step 3: Cross multiply
    69,045.84x = 103,402.62 × 39,373.74
  4. Step 4: Simplify right side
    69,045.84x = 4,071,347,875.20
  5. Step 5: Solve for x
    x = 4,071,347,875.20/69,045.84
  6. Step 6: Final answer
    x = 58,965.87

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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.