Home / 91,124.12-136,732.28-61,479.68

Finding the Fourth Proportional to 91,124.12, 136,732.28 and 61,479.68

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Solution

The fourth proportional to 91,124.12, 136,732.28 and 61,479.68 is: 92,250.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,124.12 : 136,732.28 = 61,479.68 : x
  2. Step 2: Convert to fraction form
    91,124.12/136,732.28 = 61,479.68/x
  3. Step 3: Cross multiply
    91,124.12x = 136,732.28 × 61,479.68
  4. Step 4: Simplify right side
    91,124.12x = 8,406,255,829.01
  5. Step 5: Solve for x
    x = 8,406,255,829.01/91,124.12
  6. Step 6: Final answer
    x = 92,250.62

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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.