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Finding the Fourth Proportional to 73,442.40, 101,350.80 and 39,908.40

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Solution

The fourth proportional to 73,442.40, 101,350.80 and 39,908.40 is: 55,073.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,442.40 : 101,350.80 = 39,908.40 : x
  2. Step 2: Convert to fraction form
    73,442.40/101,350.80 = 39,908.40/x
  3. Step 3: Cross multiply
    73,442.40x = 101,350.80 × 39,908.40
  4. Step 4: Simplify right side
    73,442.40x = 4,044,748,266.72
  5. Step 5: Solve for x
    x = 4,044,748,266.72/73,442.40
  6. Step 6: Final answer
    x = 55,073.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.