Home / 78,313.20-117,482.08-25,710.72

Finding the Fourth Proportional to 78,313.20, 117,482.08 and 25,710.72

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Solution

The fourth proportional to 78,313.20, 117,482.08 and 25,710.72 is: 38,570.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313.20 : 117,482.08 = 25,710.72 : x
  2. Step 2: Convert to fraction form
    78,313.20/117,482.08 = 25,710.72/x
  3. Step 3: Cross multiply
    78,313.20x = 117,482.08 × 25,710.72
  4. Step 4: Simplify right side
    78,313.20x = 3,020,548,863.90
  5. Step 5: Solve for x
    x = 3,020,548,863.90/78,313.20
  6. Step 6: Final answer
    x = 38,570.11

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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.