Home / 74,079.98-102,229.59-40,087.72

Finding the Fourth Proportional to 74,079.98, 102,229.59 and 40,087.72

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Solution

The fourth proportional to 74,079.98, 102,229.59 and 40,087.72 is: 55,320.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,079.98 : 102,229.59 = 40,087.72 : x
  2. Step 2: Convert to fraction form
    74,079.98/102,229.59 = 40,087.72/x
  3. Step 3: Cross multiply
    74,079.98x = 102,229.59 × 40,087.72
  4. Step 4: Simplify right side
    74,079.98x = 4,098,151,179.63
  5. Step 5: Solve for x
    x = 4,098,151,179.63/74,079.98
  6. Step 6: Final answer
    x = 55,320.63

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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.