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Finding the Fourth Proportional to 66,870.60, 92,290.87 and 41,385.18

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Solution

The fourth proportional to 66,870.60, 92,290.87 and 41,385.18 is: 57,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,870.60 : 92,290.87 = 41,385.18 : x
  2. Step 2: Convert to fraction form
    66,870.60/92,290.87 = 41,385.18/x
  3. Step 3: Cross multiply
    66,870.60x = 92,290.87 × 41,385.18
  4. Step 4: Simplify right side
    66,870.60x = 3,819,474,029.60
  5. Step 5: Solve for x
    x = 3,819,474,029.60/66,870.60
  6. Step 6: Final answer
    x = 57,117.39

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1.5x scale

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.