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Finding the Fourth Proportional to 89,957.66, 135,018.81 and 45,615.02

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Solution

The fourth proportional to 89,957.66, 135,018.81 and 45,615.02 is: 68,464.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,957.66 : 135,018.81 = 45,615.02 : x
  2. Step 2: Convert to fraction form
    89,957.66/135,018.81 = 45,615.02/x
  3. Step 3: Cross multiply
    89,957.66x = 135,018.81 × 45,615.02
  4. Step 4: Simplify right side
    89,957.66x = 6,158,885,718.53
  5. Step 5: Solve for x
    x = 6,158,885,718.53/89,957.66
  6. Step 6: Final answer
    x = 68,464.27

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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.