Home / 74,304.32-102,540.38-40,312.88

Finding the Fourth Proportional to 74,304.32, 102,540.38 and 40,312.88

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Solution

The fourth proportional to 74,304.32, 102,540.38 and 40,312.88 is: 55,632.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,304.32 : 102,540.38 = 40,312.88 : x
  2. Step 2: Convert to fraction form
    74,304.32/102,540.38 = 40,312.88/x
  3. Step 3: Cross multiply
    74,304.32x = 102,540.38 × 40,312.88
  4. Step 4: Simplify right side
    74,304.32x = 4,133,698,034.09
  5. Step 5: Solve for x
    x = 4,133,698,034.09/74,304.32
  6. Step 6: Final answer
    x = 55,632.00

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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.