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Finding the Fourth Proportional to 67,720, 93,422.58 and 43,854.36

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Solution

The fourth proportional to 67,720, 93,422.58 and 43,854.36 is: 60,498.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,720 : 93,422.58 = 43,854.36 : x
  2. Step 2: Convert to fraction form
    67,720/93,422.58 = 43,854.36/x
  3. Step 3: Cross multiply
    67,720x = 93,422.58 × 43,854.36
  4. Step 4: Simplify right side
    67,720x = 4,096,987,455.45
  5. Step 5: Solve for x
    x = 4,096,987,455.45/67,720
  6. Step 6: Final answer
    x = 60,498.93

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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.