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Finding the Fourth Proportional to 66,805.74, 100,054.80 and 38,655.95

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Solution

The fourth proportional to 66,805.74, 100,054.80 and 38,655.95 is: 57,894.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,805.74 : 100,054.80 = 38,655.95 : x
  2. Step 2: Convert to fraction form
    66,805.74/100,054.80 = 38,655.95/x
  3. Step 3: Cross multiply
    66,805.74x = 100,054.80 × 38,655.95
  4. Step 4: Simplify right side
    66,805.74x = 3,867,712,845.79
  5. Step 5: Solve for x
    x = 3,867,712,845.79/66,805.74
  6. Step 6: Final answer
    x = 57,894.92

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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.