Home / 78,387.34-108,178.26-48,173.92

Finding the Fourth Proportional to 78,387.34, 108,178.26 and 48,173.92

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Solution

The fourth proportional to 78,387.34, 108,178.26 and 48,173.92 is: 66,482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,387.34 : 108,178.26 = 48,173.92 : x
  2. Step 2: Convert to fraction form
    78,387.34/108,178.26 = 48,173.92/x
  3. Step 3: Cross multiply
    78,387.34x = 108,178.26 × 48,173.92
  4. Step 4: Simplify right side
    78,387.34x = 5,211,370,842.98
  5. Step 5: Solve for x
    x = 5,211,370,842.98/78,387.34
  6. Step 6: Final answer
    x = 66,482.30

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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.