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Finding the Fourth Proportional to 85,567.84, 128,318.88 and 29,397.44

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Solution

The fourth proportional to 85,567.84, 128,318.88 and 29,397.44 is: 44,084.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,567.84 : 128,318.88 = 29,397.44 : x
  2. Step 2: Convert to fraction form
    85,567.84/128,318.88 = 29,397.44/x
  3. Step 3: Cross multiply
    85,567.84x = 128,318.88 × 29,397.44
  4. Step 4: Simplify right side
    85,567.84x = 3,772,246,575.67
  5. Step 5: Solve for x
    x = 3,772,246,575.67/85,567.84
  6. Step 6: Final answer
    x = 44,084.87

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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.