Home / 84,931.28-117,186.12-51,396.56

Finding the Fourth Proportional to 84,931.28, 117,186.12 and 51,396.56

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Solution

The fourth proportional to 84,931.28, 117,186.12 and 51,396.56 is: 70,915.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,931.28 : 117,186.12 = 51,396.56 : x
  2. Step 2: Convert to fraction form
    84,931.28/117,186.12 = 51,396.56/x
  3. Step 3: Cross multiply
    84,931.28x = 117,186.12 × 51,396.56
  4. Step 4: Simplify right side
    84,931.28x = 6,022,963,447.75
  5. Step 5: Solve for x
    x = 6,022,963,447.75/84,931.28
  6. Step 6: Final answer
    x = 70,915.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.