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Finding the Fourth Proportional to 84,679.79, 127,019.74 and 21,504.65

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Solution

The fourth proportional to 84,679.79, 127,019.74 and 21,504.65 is: 32,256.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,679.79 : 127,019.74 = 21,504.65 : x
  2. Step 2: Convert to fraction form
    84,679.79/127,019.74 = 21,504.65/x
  3. Step 3: Cross multiply
    84,679.79x = 127,019.74 × 21,504.65
  4. Step 4: Simplify right side
    84,679.79x = 2,731,514,362.93
  5. Step 5: Solve for x
    x = 2,731,514,362.93/84,679.79
  6. Step 6: Final answer
    x = 32,256.98

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1.5x scale

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.