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Finding the Fourth Proportional to 65,098.80, 97,680.60 and 25,657.20

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Solution

The fourth proportional to 65,098.80, 97,680.60 and 25,657.20 is: 38,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,098.80 : 97,680.60 = 25,657.20 : x
  2. Step 2: Convert to fraction form
    65,098.80/97,680.60 = 25,657.20/x
  3. Step 3: Cross multiply
    65,098.80x = 97,680.60 × 25,657.20
  4. Step 4: Simplify right side
    65,098.80x = 2,506,210,690.32
  5. Step 5: Solve for x
    x = 2,506,210,690.32/65,098.80
  6. Step 6: Final answer
    x = 38,498.57

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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.