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Finding the Fourth Proportional to 65,747.80, 98,492.10 and 39,374.20

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Solution

The fourth proportional to 65,747.80, 98,492.10 and 39,374.20 is: 58,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,747.80 : 98,492.10 = 39,374.20 : x
  2. Step 2: Convert to fraction form
    65,747.80/98,492.10 = 39,374.20/x
  3. Step 3: Cross multiply
    65,747.80x = 98,492.10 × 39,374.20
  4. Step 4: Simplify right side
    65,747.80x = 3,878,047,643.82
  5. Step 5: Solve for x
    x = 3,878,047,643.82/65,747.80
  6. Step 6: Final answer
    x = 58,983.69

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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.