Home / 80,888.85-121,349.67-30,970.56

Finding the Fourth Proportional to 80,888.85, 121,349.67 and 30,970.56

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Solution

The fourth proportional to 80,888.85, 121,349.67 and 30,970.56 is: 46,462.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,888.85 : 121,349.67 = 30,970.56 : x
  2. Step 2: Convert to fraction form
    80,888.85/121,349.67 = 30,970.56/x
  3. Step 3: Cross multiply
    80,888.85x = 121,349.67 × 30,970.56
  4. Step 4: Simplify right side
    80,888.85x = 3,758,267,235.72
  5. Step 5: Solve for x
    x = 3,758,267,235.72/80,888.85
  6. Step 6: Final answer
    x = 46,462.12

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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.