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Finding the Fourth Proportional to 86,927.88, 130,412.16 and 26,953.20

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Solution

The fourth proportional to 86,927.88, 130,412.16 and 26,953.20 is: 40,436.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,927.88 : 130,412.16 = 26,953.20 : x
  2. Step 2: Convert to fraction form
    86,927.88/130,412.16 = 26,953.20/x
  3. Step 3: Cross multiply
    86,927.88x = 130,412.16 × 26,953.20
  4. Step 4: Simplify right side
    86,927.88x = 3,515,025,030.91
  5. Step 5: Solve for x
    x = 3,515,025,030.91/86,927.88
  6. Step 6: Final answer
    x = 40,436.11

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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.