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Finding the Fourth Proportional to 59,885.70, 89,828.55 and 20,429.70

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Solution

The fourth proportional to 59,885.70, 89,828.55 and 20,429.70 is: 30,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,885.70 : 89,828.55 = 20,429.70 : x
  2. Step 2: Convert to fraction form
    59,885.70/89,828.55 = 20,429.70/x
  3. Step 3: Cross multiply
    59,885.70x = 89,828.55 × 20,429.70
  4. Step 4: Simplify right side
    59,885.70x = 1,835,170,327.94
  5. Step 5: Solve for x
    x = 1,835,170,327.94/59,885.70
  6. Step 6: Final answer
    x = 30,644.55

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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.