Home / 74,929.46-103,399.59-40,939.12

Finding the Fourth Proportional to 74,929.46, 103,399.59 and 40,939.12

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Solution

The fourth proportional to 74,929.46, 103,399.59 and 40,939.12 is: 56,494.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,929.46 : 103,399.59 = 40,939.12 : x
  2. Step 2: Convert to fraction form
    74,929.46/103,399.59 = 40,939.12/x
  3. Step 3: Cross multiply
    74,929.46x = 103,399.59 × 40,939.12
  4. Step 4: Simplify right side
    74,929.46x = 4,233,088,275.45
  5. Step 5: Solve for x
    x = 4,233,088,275.45/74,929.46
  6. Step 6: Final answer
    x = 56,494.32

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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.