Home / 74,609.10-102,957.20-40,616.72

Finding the Fourth Proportional to 74,609.10, 102,957.20 and 40,616.72

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Solution

The fourth proportional to 74,609.10, 102,957.20 and 40,616.72 is: 56,049.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,609.10 : 102,957.20 = 40,616.72 : x
  2. Step 2: Convert to fraction form
    74,609.10/102,957.20 = 40,616.72/x
  3. Step 3: Cross multiply
    74,609.10x = 102,957.20 × 40,616.72
  4. Step 4: Simplify right side
    74,609.10x = 4,181,783,409.58
  5. Step 5: Solve for x
    x = 4,181,783,409.58/74,609.10
  6. Step 6: Final answer
    x = 56,049.24

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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.