Home / 78,017.32-107,663.79-42,207.27

Finding the Fourth Proportional to 78,017.32, 107,663.79 and 42,207.27

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Solution

The fourth proportional to 78,017.32, 107,663.79 and 42,207.27 is: 58,245.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,017.32 : 107,663.79 = 42,207.27 : x
  2. Step 2: Convert to fraction form
    78,017.32/107,663.79 = 42,207.27/x
  3. Step 3: Cross multiply
    78,017.32x = 107,663.79 × 42,207.27
  4. Step 4: Simplify right side
    78,017.32x = 4,544,194,653.75
  5. Step 5: Solve for x
    x = 4,544,194,653.75/78,017.32
  6. Step 6: Final answer
    x = 58,245.97

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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.