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Finding the Fourth Proportional to 67,785, 93,543.30 and 41,289

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Solution

The fourth proportional to 67,785, 93,543.30 and 41,289 is: 56,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,785 : 93,543.30 = 41,289 : x
  2. Step 2: Convert to fraction form
    67,785/93,543.30 = 41,289/x
  3. Step 3: Cross multiply
    67,785x = 93,543.30 × 41,289
  4. Step 4: Simplify right side
    67,785x = 3,862,309,313.70
  5. Step 5: Solve for x
    x = 3,862,309,313.70/67,785
  6. Step 6: Final answer
    x = 56,978.82

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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.