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Finding the Fourth Proportional to 59,920.88, 89,881.34 and 20,478.33

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Solution

The fourth proportional to 59,920.88, 89,881.34 and 20,478.33 is: 30,717.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,920.88 : 89,881.34 = 20,478.33 : x
  2. Step 2: Convert to fraction form
    59,920.88/89,881.34 = 20,478.33/x
  3. Step 3: Cross multiply
    59,920.88x = 89,881.34 × 20,478.33
  4. Step 4: Simplify right side
    59,920.88x = 1,840,619,638.97
  5. Step 5: Solve for x
    x = 1,840,619,638.97/59,920.88
  6. Step 6: Final answer
    x = 30,717.50

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Similar ratio
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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.