Home / 71,869.74-99,183.30-40,038.60

Finding the Fourth Proportional to 71,869.74, 99,183.30 and 40,038.60

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Solution

The fourth proportional to 71,869.74, 99,183.30 and 40,038.60 is: 55,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,869.74 : 99,183.30 = 40,038.60 : x
  2. Step 2: Convert to fraction form
    71,869.74/99,183.30 = 40,038.60/x
  3. Step 3: Cross multiply
    71,869.74x = 99,183.30 × 40,038.60
  4. Step 4: Simplify right side
    71,869.74x = 3,971,160,475.38
  5. Step 5: Solve for x
    x = 3,971,160,475.38/71,869.74
  6. Step 6: Final answer
    x = 55,254.97

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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.