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Finding the Fourth Proportional to 64,859.78, 97,281.62 and 17,478.58

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Solution

The fourth proportional to 64,859.78, 97,281.62 and 17,478.58 is: 26,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,859.78 : 97,281.62 = 17,478.58 : x
  2. Step 2: Convert to fraction form
    64,859.78/97,281.62 = 17,478.58/x
  3. Step 3: Cross multiply
    64,859.78x = 97,281.62 × 17,478.58
  4. Step 4: Simplify right side
    64,859.78x = 1,700,344,593.37
  5. Step 5: Solve for x
    x = 1,700,344,593.37/64,859.78
  6. Step 6: Final answer
    x = 26,215.70

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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.