Home / 78,043.03-107,699.66-42,233.03

Finding the Fourth Proportional to 78,043.03, 107,699.66 and 42,233.03

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Solution

The fourth proportional to 78,043.03, 107,699.66 and 42,233.03 is: 58,281.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,043.03 : 107,699.66 = 42,233.03 : x
  2. Step 2: Convert to fraction form
    78,043.03/107,699.66 = 42,233.03/x
  3. Step 3: Cross multiply
    78,043.03x = 107,699.66 × 42,233.03
  4. Step 4: Simplify right side
    78,043.03x = 4,548,482,971.77
  5. Step 5: Solve for x
    x = 4,548,482,971.77/78,043.03
  6. Step 6: Final answer
    x = 58,281.73

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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.