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Finding the Fourth Proportional to 57,131.52, 85,369.76 and 43,547.52

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Solution

The fourth proportional to 57,131.52, 85,369.76 and 43,547.52 is: 65,071.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,131.52 : 85,369.76 = 43,547.52 : x
  2. Step 2: Convert to fraction form
    57,131.52/85,369.76 = 43,547.52/x
  3. Step 3: Cross multiply
    57,131.52x = 85,369.76 × 43,547.52
  4. Step 4: Simplify right side
    57,131.52x = 3,717,641,331.00
  5. Step 5: Solve for x
    x = 3,717,641,331.00/57,131.52
  6. Step 6: Final answer
    x = 65,071.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.