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Finding the Fourth Proportional to 57,295.80, 85,943.70 and 39,581.10

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Solution

The fourth proportional to 57,295.80, 85,943.70 and 39,581.10 is: 59,371.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,295.80 : 85,943.70 = 39,581.10 : x
  2. Step 2: Convert to fraction form
    57,295.80/85,943.70 = 39,581.10/x
  3. Step 3: Cross multiply
    57,295.80x = 85,943.70 × 39,581.10
  4. Step 4: Simplify right side
    57,295.80x = 3,401,746,184.07
  5. Step 5: Solve for x
    x = 3,401,746,184.07/57,295.80
  6. Step 6: Final answer
    x = 59,371.65

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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.