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Finding the Fourth Proportional to 86,801.74, 130,213.02 and 30,630.25

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Solution

The fourth proportional to 86,801.74, 130,213.02 and 30,630.25 is: 45,949.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,801.74 : 130,213.02 = 30,630.25 : x
  2. Step 2: Convert to fraction form
    86,801.74/130,213.02 = 30,630.25/x
  3. Step 3: Cross multiply
    86,801.74x = 130,213.02 × 30,630.25
  4. Step 4: Simplify right side
    86,801.74x = 3,988,457,202.70
  5. Step 5: Solve for x
    x = 3,988,457,202.70/86,801.74
  6. Step 6: Final answer
    x = 45,949.05

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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.