Home / 85,497.11-128,205.30-49,968.62

Finding the Fourth Proportional to 85,497.11, 128,205.30 and 49,968.62

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Solution

The fourth proportional to 85,497.11, 128,205.30 and 49,968.62 is: 74,929.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,497.11 : 128,205.30 = 49,968.62 : x
  2. Step 2: Convert to fraction form
    85,497.11/128,205.30 = 49,968.62/x
  3. Step 3: Cross multiply
    85,497.11x = 128,205.30 × 49,968.62
  4. Step 4: Simplify right side
    85,497.11x = 6,406,241,917.69
  5. Step 5: Solve for x
    x = 6,406,241,917.69/85,497.11
  6. Step 6: Final answer
    x = 74,929.34

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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.