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Finding the Fourth Proportional to 93,099.29, 128,356.94 and 67,642.61

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Solution

The fourth proportional to 93,099.29, 128,356.94 and 67,642.61 is: 93,259.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,099.29 : 128,356.94 = 67,642.61 : x
  2. Step 2: Convert to fraction form
    93,099.29/128,356.94 = 67,642.61/x
  3. Step 3: Cross multiply
    93,099.29x = 128,356.94 × 67,642.61
  4. Step 4: Simplify right side
    93,099.29x = 8,682,398,095.00
  5. Step 5: Solve for x
    x = 8,682,398,095.00/93,099.29
  6. Step 6: Final answer
    x = 93,259.55

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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.