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Finding the Fourth Proportional to 85,491.43, 128,244.43 and 22,319.93

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Solution

The fourth proportional to 85,491.43, 128,244.43 and 22,319.93 is: 33,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,491.43 : 128,244.43 = 22,319.93 : x
  2. Step 2: Convert to fraction form
    85,491.43/128,244.43 = 22,319.93/x
  3. Step 3: Cross multiply
    85,491.43x = 128,244.43 × 22,319.93
  4. Step 4: Simplify right side
    85,491.43x = 2,862,406,700.49
  5. Step 5: Solve for x
    x = 2,862,406,700.49/85,491.43
  6. Step 6: Final answer
    x = 33,481.80

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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.