Home / 74,001.28-102,122.16-40,467.28

Finding the Fourth Proportional to 74,001.28, 102,122.16 and 40,467.28

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Solution

The fourth proportional to 74,001.28, 102,122.16 and 40,467.28 is: 55,845.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,001.28 : 102,122.16 = 40,467.28 : x
  2. Step 2: Convert to fraction form
    74,001.28/102,122.16 = 40,467.28/x
  3. Step 3: Cross multiply
    74,001.28x = 102,122.16 × 40,467.28
  4. Step 4: Simplify right side
    74,001.28x = 4,132,606,042.92
  5. Step 5: Solve for x
    x = 4,132,606,042.92/74,001.28
  6. Step 6: Final answer
    x = 55,845.06

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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.