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Finding the Fourth Proportional to 84,967.71, 127,443.32 and 25,803.90

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Solution

The fourth proportional to 84,967.71, 127,443.32 and 25,803.90 is: 38,703.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,967.71 : 127,443.32 = 25,803.90 : x
  2. Step 2: Convert to fraction form
    84,967.71/127,443.32 = 25,803.90/x
  3. Step 3: Cross multiply
    84,967.71x = 127,443.32 × 25,803.90
  4. Step 4: Simplify right side
    84,967.71x = 3,288,534,555.93
  5. Step 5: Solve for x
    x = 3,288,534,555.93/84,967.71
  6. Step 6: Final answer
    x = 38,703.34

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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.