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Finding the Fourth Proportional to 57,031.87, 85,547.85 and 15,478.87

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Solution

The fourth proportional to 57,031.87, 85,547.85 and 15,478.87 is: 23,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,031.87 : 85,547.85 = 15,478.87 : x
  2. Step 2: Convert to fraction form
    57,031.87/85,547.85 = 15,478.87/x
  3. Step 3: Cross multiply
    57,031.87x = 85,547.85 × 15,478.87
  4. Step 4: Simplify right side
    57,031.87x = 1,324,184,048.93
  5. Step 5: Solve for x
    x = 1,324,184,048.93/57,031.87
  6. Step 6: Final answer
    x = 23,218.32

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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.