Home / 74,559.60-102,886.20-42,731.28

Finding the Fourth Proportional to 74,559.60, 102,886.20 and 42,731.28

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Solution

The fourth proportional to 74,559.60, 102,886.20 and 42,731.28 is: 58,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,559.60 : 102,886.20 = 42,731.28 : x
  2. Step 2: Convert to fraction form
    74,559.60/102,886.20 = 42,731.28/x
  3. Step 3: Cross multiply
    74,559.60x = 102,886.20 × 42,731.28
  4. Step 4: Simplify right side
    74,559.60x = 4,396,459,020.34
  5. Step 5: Solve for x
    x = 4,396,459,020.34/74,559.60
  6. Step 6: Final answer
    x = 58,965.70

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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.