Home / 74,680.40-103,058.38-40,688.79

Finding the Fourth Proportional to 74,680.40, 103,058.38 and 40,688.79

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Solution

The fourth proportional to 74,680.40, 103,058.38 and 40,688.79 is: 56,150.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,680.40 : 103,058.38 = 40,688.79 : x
  2. Step 2: Convert to fraction form
    74,680.40/103,058.38 = 40,688.79/x
  3. Step 3: Cross multiply
    74,680.40x = 103,058.38 × 40,688.79
  4. Step 4: Simplify right side
    74,680.40x = 4,193,320,781.56
  5. Step 5: Solve for x
    x = 4,193,320,781.56/74,680.40
  6. Step 6: Final answer
    x = 56,150.22

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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.