Home / 74,731.30-103,131.14-42,906.35

Finding the Fourth Proportional to 74,731.30, 103,131.14 and 42,906.35

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Solution

The fourth proportional to 74,731.30, 103,131.14 and 42,906.35 is: 59,211.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,731.30 : 103,131.14 = 42,906.35 : x
  2. Step 2: Convert to fraction form
    74,731.30/103,131.14 = 42,906.35/x
  3. Step 3: Cross multiply
    74,731.30x = 103,131.14 × 42,906.35
  4. Step 4: Simplify right side
    74,731.30x = 4,424,980,788.74
  5. Step 5: Solve for x
    x = 4,424,980,788.74/74,731.30
  6. Step 6: Final answer
    x = 59,211.88

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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.