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Finding the Fourth Proportional to 85,496.11, 128,203.80 and 49,967.62

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Solution

The fourth proportional to 85,496.11, 128,203.80 and 49,967.62 is: 74,927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,496.11 : 128,203.80 = 49,967.62 : x
  2. Step 2: Convert to fraction form
    85,496.11/128,203.80 = 49,967.62/x
  3. Step 3: Cross multiply
    85,496.11x = 128,203.80 × 49,967.62
  4. Step 4: Simplify right side
    85,496.11x = 6,406,038,760.96
  5. Step 5: Solve for x
    x = 6,406,038,760.96/85,496.11
  6. Step 6: Final answer
    x = 74,927.84

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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.