Home / 78,394.90-108,125.35-54,236.05

Finding the Fourth Proportional to 78,394.90, 108,125.35 and 54,236.05

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Solution

The fourth proportional to 78,394.90, 108,125.35 and 54,236.05 is: 74,804.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,394.90 : 108,125.35 = 54,236.05 : x
  2. Step 2: Convert to fraction form
    78,394.90/108,125.35 = 54,236.05/x
  3. Step 3: Cross multiply
    78,394.90x = 108,125.35 × 54,236.05
  4. Step 4: Simplify right side
    78,394.90x = 5,864,291,617.69
  5. Step 5: Solve for x
    x = 5,864,291,617.69/78,394.90
  6. Step 6: Final answer
    x = 74,804.51

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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.