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Finding the Fourth Proportional to 101,419.56, 152,111.52 and 31,280.04

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Solution

The fourth proportional to 101,419.56, 152,111.52 and 31,280.04 is: 46,914.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,419.56 : 152,111.52 = 31,280.04 : x
  2. Step 2: Convert to fraction form
    101,419.56/152,111.52 = 31,280.04/x
  3. Step 3: Cross multiply
    101,419.56x = 152,111.52 × 31,280.04
  4. Step 4: Simplify right side
    101,419.56x = 4,758,054,430.06
  5. Step 5: Solve for x
    x = 4,758,054,430.06/101,419.56
  6. Step 6: Final answer
    x = 46,914.56

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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.