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Finding the Fourth Proportional to 101,388.60, 152,071.06 and 31,261.88

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Solution

The fourth proportional to 101,388.60, 152,071.06 and 31,261.88 is: 46,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,388.60 : 152,071.06 = 31,261.88 : x
  2. Step 2: Convert to fraction form
    101,388.60/152,071.06 = 31,261.88/x
  3. Step 3: Cross multiply
    101,388.60x = 152,071.06 × 31,261.88
  4. Step 4: Simplify right side
    101,388.60x = 4,754,027,229.19
  5. Step 5: Solve for x
    x = 4,754,027,229.19/101,388.60
  6. Step 6: Final answer
    x = 46,889.17

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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.