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Finding the Fourth Proportional to 85,599.16, 128,148.90 and 49,951.24

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Solution

The fourth proportional to 85,599.16, 128,148.90 and 49,951.24 is: 74,781.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,599.16 : 128,148.90 = 49,951.24 : x
  2. Step 2: Convert to fraction form
    85,599.16/128,148.90 = 49,951.24/x
  3. Step 3: Cross multiply
    85,599.16x = 128,148.90 × 49,951.24
  4. Step 4: Simplify right side
    85,599.16x = 6,401,196,459.64
  5. Step 5: Solve for x
    x = 6,401,196,459.64/85,599.16
  6. Step 6: Final answer
    x = 74,781.07

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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.