Home / 51,384.20-77,079.90-21,798.68

Finding the Fourth Proportional to 51,384.20, 77,079.90 and 21,798.68

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Solution

The fourth proportional to 51,384.20, 77,079.90 and 21,798.68 is: 32,699.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,384.20 : 77,079.90 = 21,798.68 : x
  2. Step 2: Convert to fraction form
    51,384.20/77,079.90 = 21,798.68/x
  3. Step 3: Cross multiply
    51,384.20x = 77,079.90 × 21,798.68
  4. Step 4: Simplify right side
    51,384.20x = 1,680,240,074.53
  5. Step 5: Solve for x
    x = 1,680,240,074.53/51,384.20
  6. Step 6: Final answer
    x = 32,699.55

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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.