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Finding the Fourth Proportional to 66,757, 100,155.48 and 38,670.52

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Solution

The fourth proportional to 66,757, 100,155.48 and 38,670.52 is: 58,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,757 : 100,155.48 = 38,670.52 : x
  2. Step 2: Convert to fraction form
    66,757/100,155.48 = 38,670.52/x
  3. Step 3: Cross multiply
    66,757x = 100,155.48 × 38,670.52
  4. Step 4: Simplify right side
    66,757x = 3,873,064,492.45
  5. Step 5: Solve for x
    x = 3,873,064,492.45/66,757
  6. Step 6: Final answer
    x = 58,017.35

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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.