Home / 51,987.57-77,981.34-18,280.05

Finding the Fourth Proportional to 51,987.57, 77,981.34 and 18,280.05

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Solution

The fourth proportional to 51,987.57, 77,981.34 and 18,280.05 is: 27,420.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,987.57 : 77,981.34 = 18,280.05 : x
  2. Step 2: Convert to fraction form
    51,987.57/77,981.34 = 18,280.05/x
  3. Step 3: Cross multiply
    51,987.57x = 77,981.34 × 18,280.05
  4. Step 4: Simplify right side
    51,987.57x = 1,425,502,794.27
  5. Step 5: Solve for x
    x = 1,425,502,794.27/51,987.57
  6. Step 6: Final answer
    x = 27,420.07

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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.