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Finding the Fourth Proportional to 57,898.13, 79,899.42 and 31,402.13

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Solution

The fourth proportional to 57,898.13, 79,899.42 and 31,402.13 is: 43,334.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,898.13 : 79,899.42 = 31,402.13 : x
  2. Step 2: Convert to fraction form
    57,898.13/79,899.42 = 31,402.13/x
  3. Step 3: Cross multiply
    57,898.13x = 79,899.42 × 31,402.13
  4. Step 4: Simplify right side
    57,898.13x = 2,509,011,574.27
  5. Step 5: Solve for x
    x = 2,509,011,574.27/57,898.13
  6. Step 6: Final answer
    x = 43,334.94

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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.