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Finding the Fourth Proportional to 84,808.71, 127,213.08 and 28,648.98

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Solution

The fourth proportional to 84,808.71, 127,213.08 and 28,648.98 is: 42,973.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,808.71 : 127,213.08 = 28,648.98 : x
  2. Step 2: Convert to fraction form
    84,808.71/127,213.08 = 28,648.98/x
  3. Step 3: Cross multiply
    84,808.71x = 127,213.08 × 28,648.98
  4. Step 4: Simplify right side
    84,808.71x = 3,644,524,984.66
  5. Step 5: Solve for x
    x = 3,644,524,984.66/84,808.71
  6. Step 6: Final answer
    x = 42,973.48

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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.