Home / 80,719.72-121,048.86-36,913

Finding the Fourth Proportional to 80,719.72, 121,048.86 and 36,913

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Solution

The fourth proportional to 80,719.72, 121,048.86 and 36,913 is: 55,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,719.72 : 121,048.86 = 36,913 : x
  2. Step 2: Convert to fraction form
    80,719.72/121,048.86 = 36,913/x
  3. Step 3: Cross multiply
    80,719.72x = 121,048.86 × 36,913
  4. Step 4: Simplify right side
    80,719.72x = 4,468,276,569.18
  5. Step 5: Solve for x
    x = 4,468,276,569.18/80,719.72
  6. Step 6: Final answer
    x = 55,355.45

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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.