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Finding the Fourth Proportional to 57,369.97, 85,870.68 and 30,649.15

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Solution

The fourth proportional to 57,369.97, 85,870.68 and 30,649.15 is: 45,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,369.97 : 85,870.68 = 30,649.15 : x
  2. Step 2: Convert to fraction form
    57,369.97/85,870.68 = 30,649.15/x
  3. Step 3: Cross multiply
    57,369.97x = 85,870.68 × 30,649.15
  4. Step 4: Simplify right side
    57,369.97x = 2,631,863,351.92
  5. Step 5: Solve for x
    x = 2,631,863,351.92/57,369.97
  6. Step 6: Final answer
    x = 45,875.28

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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.