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Finding the Fourth Proportional to 43,758.90, 65,638.35 and 40,379.70

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Solution

The fourth proportional to 43,758.90, 65,638.35 and 40,379.70 is: 60,569.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,758.90 : 65,638.35 = 40,379.70 : x
  2. Step 2: Convert to fraction form
    43,758.90/65,638.35 = 40,379.70/x
  3. Step 3: Cross multiply
    43,758.90x = 65,638.35 × 40,379.70
  4. Step 4: Simplify right side
    43,758.90x = 2,650,456,881.50
  5. Step 5: Solve for x
    x = 2,650,456,881.50/43,758.90
  6. Step 6: Final answer
    x = 60,569.55

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1.5x scale

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.