Home / 40,421.40-60,632.10-30,579.90

Finding the Fourth Proportional to 40,421.40, 60,632.10 and 30,579.90

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Solution

The fourth proportional to 40,421.40, 60,632.10 and 30,579.90 is: 45,869.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,421.40 : 60,632.10 = 30,579.90 : x
  2. Step 2: Convert to fraction form
    40,421.40/60,632.10 = 30,579.90/x
  3. Step 3: Cross multiply
    40,421.40x = 60,632.10 × 30,579.90
  4. Step 4: Simplify right side
    40,421.40x = 1,854,123,554.79
  5. Step 5: Solve for x
    x = 1,854,123,554.79/40,421.40
  6. Step 6: Final answer
    x = 45,869.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.