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Finding the Fourth Proportional to 65,115.40, 97,673.10 and 54,617.80

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Solution

The fourth proportional to 65,115.40, 97,673.10 and 54,617.80 is: 81,926.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,115.40 : 97,673.10 = 54,617.80 : x
  2. Step 2: Convert to fraction form
    65,115.40/97,673.10 = 54,617.80/x
  3. Step 3: Cross multiply
    65,115.40x = 97,673.10 × 54,617.80
  4. Step 4: Simplify right side
    65,115.40x = 5,334,689,841.18
  5. Step 5: Solve for x
    x = 5,334,689,841.18/65,115.40
  6. Step 6: Final answer
    x = 81,926.70

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1.5x scale

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.