Home / 90,725.70-136,056.15-31,563.30

Finding the Fourth Proportional to 90,725.70, 136,056.15 and 31,563.30

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Solution

The fourth proportional to 90,725.70, 136,056.15 and 31,563.30 is: 47,333.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,725.70 : 136,056.15 = 31,563.30 : x
  2. Step 2: Convert to fraction form
    90,725.70/136,056.15 = 31,563.30/x
  3. Step 3: Cross multiply
    90,725.70x = 136,056.15 × 31,563.30
  4. Step 4: Simplify right side
    90,725.70x = 4,294,381,079.30
  5. Step 5: Solve for x
    x = 4,294,381,079.30/90,725.70
  6. Step 6: Final answer
    x = 47,333.68

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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.