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Finding the Fourth Proportional to 85,532.46, 128,214.90 and 47,599.82

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Solution

The fourth proportional to 85,532.46, 128,214.90 and 47,599.82 is: 71,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,532.46 : 128,214.90 = 47,599.82 : x
  2. Step 2: Convert to fraction form
    85,532.46/128,214.90 = 47,599.82/x
  3. Step 3: Cross multiply
    85,532.46x = 128,214.90 × 47,599.82
  4. Step 4: Simplify right side
    85,532.46x = 6,103,006,446.48
  5. Step 5: Solve for x
    x = 6,103,006,446.48/85,532.46
  6. Step 6: Final answer
    x = 71,353.10

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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.