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Finding the Fourth Proportional to 74,672.96, 103,040.64 and 42,841.12

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Solution

The fourth proportional to 74,672.96, 103,040.64 and 42,841.12 is: 59,116.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,672.96 : 103,040.64 = 42,841.12 : x
  2. Step 2: Convert to fraction form
    74,672.96/103,040.64 = 42,841.12/x
  3. Step 3: Cross multiply
    74,672.96x = 103,040.64 × 42,841.12
  4. Step 4: Simplify right side
    74,672.96x = 4,414,376,423.12
  5. Step 5: Solve for x
    x = 4,414,376,423.12/74,672.96
  6. Step 6: Final answer
    x = 59,116.13

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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.