Home / 74,739.31-103,140.19-42,910.15

Finding the Fourth Proportional to 74,739.31, 103,140.19 and 42,910.15

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Solution

The fourth proportional to 74,739.31, 103,140.19 and 42,910.15 is: 59,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,739.31 : 103,140.19 = 42,910.15 : x
  2. Step 2: Convert to fraction form
    74,739.31/103,140.19 = 42,910.15/x
  3. Step 3: Cross multiply
    74,739.31x = 103,140.19 × 42,910.15
  4. Step 4: Simplify right side
    74,739.31x = 4,425,761,023.93
  5. Step 5: Solve for x
    x = 4,425,761,023.93/74,739.31
  6. Step 6: Final answer
    x = 59,215.97

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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.