Home / 78,254.86-117,383.52-19,091.65

Finding the Fourth Proportional to 78,254.86, 117,383.52 and 19,091.65

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Solution

The fourth proportional to 78,254.86, 117,383.52 and 19,091.65 is: 28,637.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,254.86 : 117,383.52 = 19,091.65 : x
  2. Step 2: Convert to fraction form
    78,254.86/117,383.52 = 19,091.65/x
  3. Step 3: Cross multiply
    78,254.86x = 117,383.52 × 19,091.65
  4. Step 4: Simplify right side
    78,254.86x = 2,241,045,079.61
  5. Step 5: Solve for x
    x = 2,241,045,079.61/78,254.86
  6. Step 6: Final answer
    x = 28,637.78

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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.