Home / 78,998.04-109,017.68-43,188.05

Finding the Fourth Proportional to 78,998.04, 109,017.68 and 43,188.05

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Solution

The fourth proportional to 78,998.04, 109,017.68 and 43,188.05 is: 59,599.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,998.04 : 109,017.68 = 43,188.05 : x
  2. Step 2: Convert to fraction form
    78,998.04/109,017.68 = 43,188.05/x
  3. Step 3: Cross multiply
    78,998.04x = 109,017.68 × 43,188.05
  4. Step 4: Simplify right side
    78,998.04x = 4,708,261,160.95
  5. Step 5: Solve for x
    x = 4,708,261,160.95/78,998.04
  6. Step 6: Final answer
    x = 59,599.72

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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.