Home / 52,588.08-78,838.52-20,978.64

Finding the Fourth Proportional to 52,588.08, 78,838.52 and 20,978.64

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Solution

The fourth proportional to 52,588.08, 78,838.52 and 20,978.64 is: 31,450.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,588.08 : 78,838.52 = 20,978.64 : x
  2. Step 2: Convert to fraction form
    52,588.08/78,838.52 = 20,978.64/x
  3. Step 3: Cross multiply
    52,588.08x = 78,838.52 × 20,978.64
  4. Step 4: Simplify right side
    52,588.08x = 1,653,924,929.21
  5. Step 5: Solve for x
    x = 1,653,924,929.21/52,588.08
  6. Step 6: Final answer
    x = 31,450.57

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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.