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Finding the Fourth Proportional to 101,241.60, 151,862.40 and 31,111.80

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Solution

The fourth proportional to 101,241.60, 151,862.40 and 31,111.80 is: 46,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,241.60 : 151,862.40 = 31,111.80 : x
  2. Step 2: Convert to fraction form
    101,241.60/151,862.40 = 31,111.80/x
  3. Step 3: Cross multiply
    101,241.60x = 151,862.40 × 31,111.80
  4. Step 4: Simplify right side
    101,241.60x = 4,724,712,616.32
  5. Step 5: Solve for x
    x = 4,724,712,616.32/101,241.60
  6. Step 6: Final answer
    x = 46,667.70

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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.