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Finding the Fourth Proportional to 101,766.95, 140,439.36 and 56,449.38

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Solution

The fourth proportional to 101,766.95, 140,439.36 and 56,449.38 is: 77,900.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,766.95 : 140,439.36 = 56,449.38 : x
  2. Step 2: Convert to fraction form
    101,766.95/140,439.36 = 56,449.38/x
  3. Step 3: Cross multiply
    101,766.95x = 140,439.36 × 56,449.38
  4. Step 4: Simplify right side
    101,766.95x = 7,927,714,799.60
  5. Step 5: Solve for x
    x = 7,927,714,799.60/101,766.95
  6. Step 6: Final answer
    x = 77,900.69

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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.