Home / 74,398.38-102,669.03-40,407.18

Finding the Fourth Proportional to 74,398.38, 102,669.03 and 40,407.18

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Solution

The fourth proportional to 74,398.38, 102,669.03 and 40,407.18 is: 55,761.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,398.38 : 102,669.03 = 40,407.18 : x
  2. Step 2: Convert to fraction form
    74,398.38/102,669.03 = 40,407.18/x
  3. Step 3: Cross multiply
    74,398.38x = 102,669.03 × 40,407.18
  4. Step 4: Simplify right side
    74,398.38x = 4,148,565,975.64
  5. Step 5: Solve for x
    x = 4,148,565,975.64/74,398.38
  6. Step 6: Final answer
    x = 55,761.51

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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.