Home / 60,931.85-91,371.64-20,954.86

Finding the Fourth Proportional to 60,931.85, 91,371.64 and 20,954.86

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Solution

The fourth proportional to 60,931.85, 91,371.64 and 20,954.86 is: 31,423.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,931.85 : 91,371.64 = 20,954.86 : x
  2. Step 2: Convert to fraction form
    60,931.85/91,371.64 = 20,954.86/x
  3. Step 3: Cross multiply
    60,931.85x = 91,371.64 × 20,954.86
  4. Step 4: Simplify right side
    60,931.85x = 1,914,679,959.27
  5. Step 5: Solve for x
    x = 1,914,679,959.27/60,931.85
  6. Step 6: Final answer
    x = 31,423.30

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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.