Home / 84,764.70-127,066.05-31,442.40

Finding the Fourth Proportional to 84,764.70, 127,066.05 and 31,442.40

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Solution

The fourth proportional to 84,764.70, 127,066.05 and 31,442.40 is: 47,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,764.70 : 127,066.05 = 31,442.40 : x
  2. Step 2: Convert to fraction form
    84,764.70/127,066.05 = 31,442.40/x
  3. Step 3: Cross multiply
    84,764.70x = 127,066.05 × 31,442.40
  4. Step 4: Simplify right side
    84,764.70x = 3,995,261,570.52
  5. Step 5: Solve for x
    x = 3,995,261,570.52/84,764.70
  6. Step 6: Final answer
    x = 47,133.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.