Home / 74,127.39-102,295.65-40,135.91

Finding the Fourth Proportional to 74,127.39, 102,295.65 and 40,135.91

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Solution

The fourth proportional to 74,127.39, 102,295.65 and 40,135.91 is: 55,387.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,127.39 : 102,295.65 = 40,135.91 : x
  2. Step 2: Convert to fraction form
    74,127.39/102,295.65 = 40,135.91/x
  3. Step 3: Cross multiply
    74,127.39x = 102,295.65 × 40,135.91
  4. Step 4: Simplify right side
    74,127.39x = 4,105,728,490.31
  5. Step 5: Solve for x
    x = 4,105,728,490.31/74,127.39
  6. Step 6: Final answer
    x = 55,387.47

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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.