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Finding the Fourth Proportional to 60,340.84, 90,391 and 47,131.36

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Solution

The fourth proportional to 60,340.84, 90,391 and 47,131.36 is: 70,603.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,340.84 : 90,391 = 47,131.36 : x
  2. Step 2: Convert to fraction form
    60,340.84/90,391 = 47,131.36/x
  3. Step 3: Cross multiply
    60,340.84x = 90,391 × 47,131.36
  4. Step 4: Simplify right side
    60,340.84x = 4,260,250,761.76
  5. Step 5: Solve for x
    x = 4,260,250,761.76/60,340.84
  6. Step 6: Final answer
    x = 70,603.11

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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.