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Finding the Fourth Proportional to 84,888.72, 127,289.34 and 38,101.50

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Solution

The fourth proportional to 84,888.72, 127,289.34 and 38,101.50 is: 57,132.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,888.72 : 127,289.34 = 38,101.50 : x
  2. Step 2: Convert to fraction form
    84,888.72/127,289.34 = 38,101.50/x
  3. Step 3: Cross multiply
    84,888.72x = 127,289.34 × 38,101.50
  4. Step 4: Simplify right side
    84,888.72x = 4,849,914,788.01
  5. Step 5: Solve for x
    x = 4,849,914,788.01/84,888.72
  6. Step 6: Final answer
    x = 57,132.62

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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.