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Finding the Fourth Proportional to 45,392.19, 68,050 and 21,686.32

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Solution

The fourth proportional to 45,392.19, 68,050 and 21,686.32 is: 32,511.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,392.19 : 68,050 = 21,686.32 : x
  2. Step 2: Convert to fraction form
    45,392.19/68,050 = 21,686.32/x
  3. Step 3: Cross multiply
    45,392.19x = 68,050 × 21,686.32
  4. Step 4: Simplify right side
    45,392.19x = 1,475,754,076
  5. Step 5: Solve for x
    x = 1,475,754,076/45,392.19
  6. Step 6: Final answer
    x = 32,511.19

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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.