Home / 78,063.06-107,727.33-42,253.08

Finding the Fourth Proportional to 78,063.06, 107,727.33 and 42,253.08

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Solution

The fourth proportional to 78,063.06, 107,727.33 and 42,253.08 is: 58,309.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,063.06 : 107,727.33 = 42,253.08 : x
  2. Step 2: Convert to fraction form
    78,063.06/107,727.33 = 42,253.08/x
  3. Step 3: Cross multiply
    78,063.06x = 107,727.33 × 42,253.08
  4. Step 4: Simplify right side
    78,063.06x = 4,551,811,492.68
  5. Step 5: Solve for x
    x = 4,551,811,492.68/78,063.06
  6. Step 6: Final answer
    x = 58,309.42

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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.