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Finding the Fourth Proportional to 64,617.84, 96,974.10 and 42,423.39

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Solution

The fourth proportional to 64,617.84, 96,974.10 and 42,423.39 is: 63,666.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,617.84 : 96,974.10 = 42,423.39 : x
  2. Step 2: Convert to fraction form
    64,617.84/96,974.10 = 42,423.39/x
  3. Step 3: Cross multiply
    64,617.84x = 96,974.10 × 42,423.39
  4. Step 4: Simplify right side
    64,617.84x = 4,113,970,064.20
  5. Step 5: Solve for x
    x = 4,113,970,064.20/64,617.84
  6. Step 6: Final answer
    x = 63,666.17

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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.