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Finding the Fourth Proportional to 85,603.10, 128,404.65 and 22,423.10

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Solution

The fourth proportional to 85,603.10, 128,404.65 and 22,423.10 is: 33,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603.10 : 128,404.65 = 22,423.10 : x
  2. Step 2: Convert to fraction form
    85,603.10/128,404.65 = 22,423.10/x
  3. Step 3: Cross multiply
    85,603.10x = 128,404.65 × 22,423.10
  4. Step 4: Simplify right side
    85,603.10x = 2,879,230,307.42
  5. Step 5: Solve for x
    x = 2,879,230,307.42/85,603.10
  6. Step 6: Final answer
    x = 33,634.65

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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.