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Finding the Fourth Proportional to 64,995.20, 97,417.20 and 29,938.40

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Solution

The fourth proportional to 64,995.20, 97,417.20 and 29,938.40 is: 44,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,995.20 : 97,417.20 = 29,938.40 : x
  2. Step 2: Convert to fraction form
    64,995.20/97,417.20 = 29,938.40/x
  3. Step 3: Cross multiply
    64,995.20x = 97,417.20 × 29,938.40
  4. Step 4: Simplify right side
    64,995.20x = 2,916,515,100.48
  5. Step 5: Solve for x
    x = 2,916,515,100.48/64,995.20
  6. Step 6: Final answer
    x = 44,872.78

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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.