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Finding the Fourth Proportional to 87,288.54, 130,979.79 and 34,698.54

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Solution

The fourth proportional to 87,288.54, 130,979.79 and 34,698.54 is: 52,066.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,288.54 : 130,979.79 = 34,698.54 : x
  2. Step 2: Convert to fraction form
    87,288.54/130,979.79 = 34,698.54/x
  3. Step 3: Cross multiply
    87,288.54x = 130,979.79 × 34,698.54
  4. Step 4: Simplify right side
    87,288.54x = 4,544,807,482.51
  5. Step 5: Solve for x
    x = 4,544,807,482.51/87,288.54
  6. Step 6: Final answer
    x = 52,066.49

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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.