Home / 81,384.40-122,148.60-48,062.80

Finding the Fourth Proportional to 81,384.40, 122,148.60 and 48,062.80

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Solution

The fourth proportional to 81,384.40, 122,148.60 and 48,062.80 is: 72,136.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,384.40 : 122,148.60 = 48,062.80 : x
  2. Step 2: Convert to fraction form
    81,384.40/122,148.60 = 48,062.80/x
  3. Step 3: Cross multiply
    81,384.40x = 122,148.60 × 48,062.80
  4. Step 4: Simplify right side
    81,384.40x = 5,870,803,732.08
  5. Step 5: Solve for x
    x = 5,870,803,732.08/81,384.40
  6. Step 6: Final answer
    x = 72,136.72

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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.