Home / 66,747.18-92,084.91-42,870.54

Finding the Fourth Proportional to 66,747.18, 92,084.91 and 42,870.54

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Solution

The fourth proportional to 66,747.18, 92,084.91 and 42,870.54 is: 59,144.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,747.18 : 92,084.91 = 42,870.54 : x
  2. Step 2: Convert to fraction form
    66,747.18/92,084.91 = 42,870.54/x
  3. Step 3: Cross multiply
    66,747.18x = 92,084.91 × 42,870.54
  4. Step 4: Simplify right side
    66,747.18x = 3,947,729,817.55
  5. Step 5: Solve for x
    x = 3,947,729,817.55/66,747.18
  6. Step 6: Final answer
    x = 59,144.52

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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.