Home / 52,355.65-78,533.11-21,190.45

Finding the Fourth Proportional to 52,355.65, 78,533.11 and 21,190.45

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Solution

The fourth proportional to 52,355.65, 78,533.11 and 21,190.45 is: 31,785.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,355.65 : 78,533.11 = 21,190.45 : x
  2. Step 2: Convert to fraction form
    52,355.65/78,533.11 = 21,190.45/x
  3. Step 3: Cross multiply
    52,355.65x = 78,533.11 × 21,190.45
  4. Step 4: Simplify right side
    52,355.65x = 1,664,151,442.18
  5. Step 5: Solve for x
    x = 1,664,151,442.18/52,355.65
  6. Step 6: Final answer
    x = 31,785.52

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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.