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Finding the Fourth Proportional to 60,291.50, 90,435.87 and 15,921.36

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Solution

The fourth proportional to 60,291.50, 90,435.87 and 15,921.36 is: 23,881.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,291.50 : 90,435.87 = 15,921.36 : x
  2. Step 2: Convert to fraction form
    60,291.50/90,435.87 = 15,921.36/x
  3. Step 3: Cross multiply
    60,291.50x = 90,435.87 × 15,921.36
  4. Step 4: Simplify right side
    60,291.50x = 1,439,862,043.18
  5. Step 5: Solve for x
    x = 1,439,862,043.18/60,291.50
  6. Step 6: Final answer
    x = 23,881.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.