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Finding the Fourth Proportional to 57,042.99, 78,719.49 and 31,892.49

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Solution

The fourth proportional to 57,042.99, 78,719.49 and 31,892.49 is: 44,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,042.99 : 78,719.49 = 31,892.49 : x
  2. Step 2: Convert to fraction form
    57,042.99/78,719.49 = 31,892.49/x
  3. Step 3: Cross multiply
    57,042.99x = 78,719.49 × 31,892.49
  4. Step 4: Simplify right side
    57,042.99x = 2,510,560,547.63
  5. Step 5: Solve for x
    x = 2,510,560,547.63/57,042.99
  6. Step 6: Final answer
    x = 44,011.73

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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.