Home / 51,620.69-77,421.78-13,670.20

Finding the Fourth Proportional to 51,620.69, 77,421.78 and 13,670.20

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Solution

The fourth proportional to 51,620.69, 77,421.78 and 13,670.20 is: 20,502.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,620.69 : 77,421.78 = 13,670.20 : x
  2. Step 2: Convert to fraction form
    51,620.69/77,421.78 = 13,670.20/x
  3. Step 3: Cross multiply
    51,620.69x = 77,421.78 × 13,670.20
  4. Step 4: Simplify right side
    51,620.69x = 1,058,371,313.73
  5. Step 5: Solve for x
    x = 1,058,371,313.73/51,620.69
  6. Step 6: Final answer
    x = 20,502.85

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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.