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Finding the Fourth Proportional to 89,907.60, 124,072.36 and 49,621.36

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Solution

The fourth proportional to 89,907.60, 124,072.36 and 49,621.36 is: 68,477.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,907.60 : 124,072.36 = 49,621.36 : x
  2. Step 2: Convert to fraction form
    89,907.60/124,072.36 = 49,621.36/x
  3. Step 3: Cross multiply
    89,907.60x = 124,072.36 × 49,621.36
  4. Step 4: Simplify right side
    89,907.60x = 6,156,639,241.61
  5. Step 5: Solve for x
    x = 6,156,639,241.61/89,907.60
  6. Step 6: Final answer
    x = 68,477.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.