Home / 74,369.10-102,628.78-40,376.91

Finding the Fourth Proportional to 74,369.10, 102,628.78 and 40,376.91

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Solution

The fourth proportional to 74,369.10, 102,628.78 and 40,376.91 is: 55,719.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,369.10 : 102,628.78 = 40,376.91 : x
  2. Step 2: Convert to fraction form
    74,369.10/102,628.78 = 40,376.91/x
  3. Step 3: Cross multiply
    74,369.10x = 102,628.78 × 40,376.91
  4. Step 4: Simplify right side
    74,369.10x = 4,143,833,013.47
  5. Step 5: Solve for x
    x = 4,143,833,013.47/74,369.10
  6. Step 6: Final answer
    x = 55,719.82

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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.