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Finding the Fourth Proportional to 101,892.21, 152,789.13 and 42,711.99

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Solution

The fourth proportional to 101,892.21, 152,789.13 and 42,711.99 is: 64,047.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,892.21 : 152,789.13 = 42,711.99 : x
  2. Step 2: Convert to fraction form
    101,892.21/152,789.13 = 42,711.99/x
  3. Step 3: Cross multiply
    101,892.21x = 152,789.13 × 42,711.99
  4. Step 4: Simplify right side
    101,892.21x = 6,525,927,792.67
  5. Step 5: Solve for x
    x = 6,525,927,792.67/101,892.21
  6. Step 6: Final answer
    x = 64,047.37

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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.