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Finding the Fourth Proportional to 89,970.98, 134,876.26 and 45,574.88

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Solution

The fourth proportional to 89,970.98, 134,876.26 and 45,574.88 is: 68,321.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,970.98 : 134,876.26 = 45,574.88 : x
  2. Step 2: Convert to fraction form
    89,970.98/134,876.26 = 45,574.88/x
  3. Step 3: Cross multiply
    89,970.98x = 134,876.26 × 45,574.88
  4. Step 4: Simplify right side
    89,970.98x = 6,146,968,490.58
  5. Step 5: Solve for x
    x = 6,146,968,490.58/89,970.98
  6. Step 6: Final answer
    x = 68,321.68

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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.