Home / 52,355.15-78,532.36-21,189.95

Finding the Fourth Proportional to 52,355.15, 78,532.36 and 21,189.95

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Solution

The fourth proportional to 52,355.15, 78,532.36 and 21,189.95 is: 31,784.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,355.15 : 78,532.36 = 21,189.95 : x
  2. Step 2: Convert to fraction form
    52,355.15/78,532.36 = 21,189.95/x
  3. Step 3: Cross multiply
    52,355.15x = 78,532.36 × 21,189.95
  4. Step 4: Simplify right side
    52,355.15x = 1,664,096,336.15
  5. Step 5: Solve for x
    x = 1,664,096,336.15/52,355.15
  6. Step 6: Final answer
    x = 31,784.77

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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.