Home / 78,019.45-107,666.85-42,209.44

Finding the Fourth Proportional to 78,019.45, 107,666.85 and 42,209.44

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Solution

The fourth proportional to 78,019.45, 107,666.85 and 42,209.44 is: 58,249.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,019.45 : 107,666.85 = 42,209.44 : x
  2. Step 2: Convert to fraction form
    78,019.45/107,666.85 = 42,209.44/x
  3. Step 3: Cross multiply
    78,019.45x = 107,666.85 × 42,209.44
  4. Step 4: Simplify right side
    78,019.45x = 4,544,557,445.06
  5. Step 5: Solve for x
    x = 4,544,557,445.06/78,019.45
  6. Step 6: Final answer
    x = 58,249.03

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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.