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Finding the Fourth Proportional to 70,974.82, 106,148.40 and 63,132.40

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Solution

The fourth proportional to 70,974.82, 106,148.40 and 63,132.40 is: 94,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,974.82 : 106,148.40 = 63,132.40 : x
  2. Step 2: Convert to fraction form
    70,974.82/106,148.40 = 63,132.40/x
  3. Step 3: Cross multiply
    70,974.82x = 106,148.40 × 63,132.40
  4. Step 4: Simplify right side
    70,974.82x = 6,701,403,248.16
  5. Step 5: Solve for x
    x = 6,701,403,248.16/70,974.82
  6. Step 6: Final answer
    x = 94,419.45

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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.