Home / 74,224.50-102,429.81-40,689.78

Finding the Fourth Proportional to 74,224.50, 102,429.81 and 40,689.78

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Solution

The fourth proportional to 74,224.50, 102,429.81 and 40,689.78 is: 56,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,224.50 : 102,429.81 = 40,689.78 : x
  2. Step 2: Convert to fraction form
    74,224.50/102,429.81 = 40,689.78/x
  3. Step 3: Cross multiply
    74,224.50x = 102,429.81 × 40,689.78
  4. Step 4: Simplify right side
    74,224.50x = 4,167,846,434.34
  5. Step 5: Solve for x
    x = 4,167,846,434.34/74,224.50
  6. Step 6: Final answer
    x = 56,151.90

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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.