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Finding the Fourth Proportional to 57,139.66, 85,713.81 and 17,700.76

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Solution

The fourth proportional to 57,139.66, 85,713.81 and 17,700.76 is: 26,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,139.66 : 85,713.81 = 17,700.76 : x
  2. Step 2: Convert to fraction form
    57,139.66/85,713.81 = 17,700.76/x
  3. Step 3: Cross multiply
    57,139.66x = 85,713.81 × 17,700.76
  4. Step 4: Simplify right side
    57,139.66x = 1,517,199,579.50
  5. Step 5: Solve for x
    x = 1,517,199,579.50/57,139.66
  6. Step 6: Final answer
    x = 26,552.48

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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.