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Finding the Fourth Proportional to 72,492.93, 108,738.02 and 29,789.28

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Solution

The fourth proportional to 72,492.93, 108,738.02 and 29,789.28 is: 44,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,492.93 : 108,738.02 = 29,789.28 : x
  2. Step 2: Convert to fraction form
    72,492.93/108,738.02 = 29,789.28/x
  3. Step 3: Cross multiply
    72,492.93x = 108,738.02 × 29,789.28
  4. Step 4: Simplify right side
    72,492.93x = 3,239,226,631.79
  5. Step 5: Solve for x
    x = 3,239,226,631.79/72,492.93
  6. Step 6: Final answer
    x = 44,683.35

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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.