Home / 91,243.20-125,915.52-55,423.68

Finding the Fourth Proportional to 91,243.20, 125,915.52 and 55,423.68

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Solution

The fourth proportional to 91,243.20, 125,915.52 and 55,423.68 is: 76,484.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,243.20 : 125,915.52 = 55,423.68 : x
  2. Step 2: Convert to fraction form
    91,243.20/125,915.52 = 55,423.68/x
  3. Step 3: Cross multiply
    91,243.20x = 125,915.52 × 55,423.68
  4. Step 4: Simplify right side
    91,243.20x = 6,978,701,487.51
  5. Step 5: Solve for x
    x = 6,978,701,487.51/91,243.20
  6. Step 6: Final answer
    x = 76,484.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.