Home / 56,141.04-77,474.16-30,990

Finding the Fourth Proportional to 56,141.04, 77,474.16 and 30,990

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Solution

The fourth proportional to 56,141.04, 77,474.16 and 30,990 is: 42,765.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,141.04 : 77,474.16 = 30,990 : x
  2. Step 2: Convert to fraction form
    56,141.04/77,474.16 = 30,990/x
  3. Step 3: Cross multiply
    56,141.04x = 77,474.16 × 30,990
  4. Step 4: Simplify right side
    56,141.04x = 2,400,924,218.40
  5. Step 5: Solve for x
    x = 2,400,924,218.40/56,141.04
  6. Step 6: Final answer
    x = 42,765.94

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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.