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Finding the Fourth Proportional to 89,809.40, 134,568.30 and 56,469.80

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Solution

The fourth proportional to 89,809.40, 134,568.30 and 56,469.80 is: 84,613.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,809.40 : 134,568.30 = 56,469.80 : x
  2. Step 2: Convert to fraction form
    89,809.40/134,568.30 = 56,469.80/x
  3. Step 3: Cross multiply
    89,809.40x = 134,568.30 × 56,469.80
  4. Step 4: Simplify right side
    89,809.40x = 7,599,044,987.34
  5. Step 5: Solve for x
    x = 7,599,044,987.34/89,809.40
  6. Step 6: Final answer
    x = 84,613.02

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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.