Home / 78,231.22-107,958.80-42,421.14

Finding the Fourth Proportional to 78,231.22, 107,958.80 and 42,421.14

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Solution

The fourth proportional to 78,231.22, 107,958.80 and 42,421.14 is: 58,541.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,231.22 : 107,958.80 = 42,421.14 : x
  2. Step 2: Convert to fraction form
    78,231.22/107,958.80 = 42,421.14/x
  3. Step 3: Cross multiply
    78,231.22x = 107,958.80 × 42,421.14
  4. Step 4: Simplify right side
    78,231.22x = 4,579,735,475.08
  5. Step 5: Solve for x
    x = 4,579,735,475.08/78,231.22
  6. Step 6: Final answer
    x = 58,541.02

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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.