Home / 52,479.20-78,718.80-21,336.80

Finding the Fourth Proportional to 52,479.20, 78,718.80 and 21,336.80

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Solution

The fourth proportional to 52,479.20, 78,718.80 and 21,336.80 is: 32,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,479.20 : 78,718.80 = 21,336.80 : x
  2. Step 2: Convert to fraction form
    52,479.20/78,718.80 = 21,336.80/x
  3. Step 3: Cross multiply
    52,479.20x = 78,718.80 × 21,336.80
  4. Step 4: Simplify right side
    52,479.20x = 1,679,607,291.84
  5. Step 5: Solve for x
    x = 1,679,607,291.84/52,479.20
  6. Step 6: Final answer
    x = 32,005.20

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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.