Home / 78,234.12-117,368.19-25,641.63

Finding the Fourth Proportional to 78,234.12, 117,368.19 and 25,641.63

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Solution

The fourth proportional to 78,234.12, 117,368.19 and 25,641.63 is: 38,468.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,234.12 : 117,368.19 = 25,641.63 : x
  2. Step 2: Convert to fraction form
    78,234.12/117,368.19 = 25,641.63/x
  3. Step 3: Cross multiply
    78,234.12x = 117,368.19 × 25,641.63
  4. Step 4: Simplify right side
    78,234.12x = 3,009,511,701.75
  5. Step 5: Solve for x
    x = 3,009,511,701.75/78,234.12
  6. Step 6: Final answer
    x = 38,468.02

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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.