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Finding the Fourth Proportional to 64,861.80, 97,292.70 and 25,405.80

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Solution

The fourth proportional to 64,861.80, 97,292.70 and 25,405.80 is: 38,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,861.80 : 97,292.70 = 25,405.80 : x
  2. Step 2: Convert to fraction form
    64,861.80/97,292.70 = 25,405.80/x
  3. Step 3: Cross multiply
    64,861.80x = 97,292.70 × 25,405.80
  4. Step 4: Simplify right side
    64,861.80x = 2,471,798,877.66
  5. Step 5: Solve for x
    x = 2,471,798,877.66/64,861.80
  6. Step 6: Final answer
    x = 38,108.70

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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.