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Finding the Fourth Proportional to 60,721.47, 83,767.02 and 39,492.99

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Solution

The fourth proportional to 60,721.47, 83,767.02 and 39,492.99 is: 54,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,721.47 : 83,767.02 = 39,492.99 : x
  2. Step 2: Convert to fraction form
    60,721.47/83,767.02 = 39,492.99/x
  3. Step 3: Cross multiply
    60,721.47x = 83,767.02 × 39,492.99
  4. Step 4: Simplify right side
    60,721.47x = 3,308,210,083.19
  5. Step 5: Solve for x
    x = 3,308,210,083.19/60,721.47
  6. Step 6: Final answer
    x = 54,481.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.