Home / 77,988.04-107,623.10-42,177.96

Finding the Fourth Proportional to 77,988.04, 107,623.10 and 42,177.96

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Solution

The fourth proportional to 77,988.04, 107,623.10 and 42,177.96 is: 58,205.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,988.04 : 107,623.10 = 42,177.96 : x
  2. Step 2: Convert to fraction form
    77,988.04/107,623.10 = 42,177.96/x
  3. Step 3: Cross multiply
    77,988.04x = 107,623.10 × 42,177.96
  4. Step 4: Simplify right side
    77,988.04x = 4,539,322,806.88
  5. Step 5: Solve for x
    x = 4,539,322,806.88/77,988.04
  6. Step 6: Final answer
    x = 58,205.37

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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.