Home / 45,931.42-68,787.78-31,905.46

Finding the Fourth Proportional to 45,931.42, 68,787.78 and 31,905.46

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Solution

The fourth proportional to 45,931.42, 68,787.78 and 31,905.46 is: 47,782.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,931.42 : 68,787.78 = 31,905.46 : x
  2. Step 2: Convert to fraction form
    45,931.42/68,787.78 = 31,905.46/x
  3. Step 3: Cross multiply
    45,931.42x = 68,787.78 × 31,905.46
  4. Step 4: Simplify right side
    45,931.42x = 2,194,705,763.28
  5. Step 5: Solve for x
    x = 2,194,705,763.28/45,931.42
  6. Step 6: Final answer
    x = 47,782.23

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1.5x scale

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.