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Finding the Fourth Proportional to 86,810.40, 130,191.30 and 27,664.20

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Solution

The fourth proportional to 86,810.40, 130,191.30 and 27,664.20 is: 41,488.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,810.40 : 130,191.30 = 27,664.20 : x
  2. Step 2: Convert to fraction form
    86,810.40/130,191.30 = 27,664.20/x
  3. Step 3: Cross multiply
    86,810.40x = 130,191.30 × 27,664.20
  4. Step 4: Simplify right side
    86,810.40x = 3,601,638,161.46
  5. Step 5: Solve for x
    x = 3,601,638,161.46/86,810.40
  6. Step 6: Final answer
    x = 41,488.56

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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.