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Finding the Fourth Proportional to 45,559.62, 68,340.05 and 15,978.32

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Solution

The fourth proportional to 45,559.62, 68,340.05 and 15,978.32 is: 23,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,559.62 : 68,340.05 = 15,978.32 : x
  2. Step 2: Convert to fraction form
    45,559.62/68,340.05 = 15,978.32/x
  3. Step 3: Cross multiply
    45,559.62x = 68,340.05 × 15,978.32
  4. Step 4: Simplify right side
    45,559.62x = 1,091,959,278.67
  5. Step 5: Solve for x
    x = 1,091,959,278.67/45,559.62
  6. Step 6: Final answer
    x = 23,967.70

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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.