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Finding the Fourth Proportional to 84,854.69, 127,298.44 and 28,703.92

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Solution

The fourth proportional to 84,854.69, 127,298.44 and 28,703.92 is: 43,061.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,854.69 : 127,298.44 = 28,703.92 : x
  2. Step 2: Convert to fraction form
    84,854.69/127,298.44 = 28,703.92/x
  3. Step 3: Cross multiply
    84,854.69x = 127,298.44 × 28,703.92
  4. Step 4: Simplify right side
    84,854.69x = 3,653,964,032.74
  5. Step 5: Solve for x
    x = 3,653,964,032.74/84,854.69
  6. Step 6: Final answer
    x = 43,061.43

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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.