Home / 52,124.20-78,128.70-28,767.40

Finding the Fourth Proportional to 52,124.20, 78,128.70 and 28,767.40

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Solution

The fourth proportional to 52,124.20, 78,128.70 and 28,767.40 is: 43,119.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,124.20 : 78,128.70 = 28,767.40 : x
  2. Step 2: Convert to fraction form
    52,124.20/78,128.70 = 28,767.40/x
  3. Step 3: Cross multiply
    52,124.20x = 78,128.70 × 28,767.40
  4. Step 4: Simplify right side
    52,124.20x = 2,247,559,564.38
  5. Step 5: Solve for x
    x = 2,247,559,564.38/52,124.20
  6. Step 6: Final answer
    x = 43,119.31

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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.