Home / 81,734.61-122,598.59-28,438.79

Finding the Fourth Proportional to 81,734.61, 122,598.59 and 28,438.79

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Solution

The fourth proportional to 81,734.61, 122,598.59 and 28,438.79 is: 42,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,734.61 : 122,598.59 = 28,438.79 : x
  2. Step 2: Convert to fraction form
    81,734.61/122,598.59 = 28,438.79/x
  3. Step 3: Cross multiply
    81,734.61x = 122,598.59 × 28,438.79
  4. Step 4: Simplify right side
    81,734.61x = 3,486,554,800.12
  5. Step 5: Solve for x
    x = 3,486,554,800.12/81,734.61
  6. Step 6: Final answer
    x = 42,657.02

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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.