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Finding the Fourth Proportional to 40,510.60, 60,780.30 and 39,070.60

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Solution

The fourth proportional to 40,510.60, 60,780.30 and 39,070.60 is: 58,619.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,510.60 : 60,780.30 = 39,070.60 : x
  2. Step 2: Convert to fraction form
    40,510.60/60,780.30 = 39,070.60/x
  3. Step 3: Cross multiply
    40,510.60x = 60,780.30 × 39,070.60
  4. Step 4: Simplify right side
    40,510.60x = 2,374,722,789.18
  5. Step 5: Solve for x
    x = 2,374,722,789.18/40,510.60
  6. Step 6: Final answer
    x = 58,619.79

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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.