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Finding the Fourth Proportional to 93,288.88, 128,738.66 and 53,002.70

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Solution

The fourth proportional to 93,288.88, 128,738.66 and 53,002.70 is: 73,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,288.88 : 128,738.66 = 53,002.70 : x
  2. Step 2: Convert to fraction form
    93,288.88/128,738.66 = 53,002.70/x
  3. Step 3: Cross multiply
    93,288.88x = 128,738.66 × 53,002.70
  4. Step 4: Simplify right side
    93,288.88x = 6,823,496,574.38
  5. Step 5: Solve for x
    x = 6,823,496,574.38/93,288.88
  6. Step 6: Final answer
    x = 73,143.73

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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.