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Finding the Fourth Proportional to 93,238.67, 128,686.02 and 54,995.87

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Solution

The fourth proportional to 93,238.67, 128,686.02 and 54,995.87 is: 75,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,238.67 : 128,686.02 = 54,995.87 : x
  2. Step 2: Convert to fraction form
    93,238.67/128,686.02 = 54,995.87/x
  3. Step 3: Cross multiply
    93,238.67x = 128,686.02 × 54,995.87
  4. Step 4: Simplify right side
    93,238.67x = 7,077,199,626.74
  5. Step 5: Solve for x
    x = 7,077,199,626.74/93,238.67
  6. Step 6: Final answer
    x = 75,904.12

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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.