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Finding the Fourth Proportional to 67,641.52, 101,459.37 and 17,720.51

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Solution

The fourth proportional to 67,641.52, 101,459.37 and 17,720.51 is: 26,580.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,641.52 : 101,459.37 = 17,720.51 : x
  2. Step 2: Convert to fraction form
    67,641.52/101,459.37 = 17,720.51/x
  3. Step 3: Cross multiply
    67,641.52x = 101,459.37 × 17,720.51
  4. Step 4: Simplify right side
    67,641.52x = 1,797,911,780.68
  5. Step 5: Solve for x
    x = 1,797,911,780.68/67,641.52
  6. Step 6: Final answer
    x = 26,580.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.