Home / 78,051.02-107,711.19-42,241.79

Finding the Fourth Proportional to 78,051.02, 107,711.19 and 42,241.79

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Solution

The fourth proportional to 78,051.02, 107,711.19 and 42,241.79 is: 58,294.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,051.02 : 107,711.19 = 42,241.79 : x
  2. Step 2: Convert to fraction form
    78,051.02/107,711.19 = 42,241.79/x
  3. Step 3: Cross multiply
    78,051.02x = 107,711.19 × 42,241.79
  4. Step 4: Simplify right side
    78,051.02x = 4,549,912,930.07
  5. Step 5: Solve for x
    x = 4,549,912,930.07/78,051.02
  6. Step 6: Final answer
    x = 58,294.09

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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.