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Finding the Fourth Proportional to 86,904.80, 130,371.60 and 37,008.80

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Solution

The fourth proportional to 86,904.80, 130,371.60 and 37,008.80 is: 55,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,904.80 : 130,371.60 = 37,008.80 : x
  2. Step 2: Convert to fraction form
    86,904.80/130,371.60 = 37,008.80/x
  3. Step 3: Cross multiply
    86,904.80x = 130,371.60 × 37,008.80
  4. Step 4: Simplify right side
    86,904.80x = 4,824,896,470.08
  5. Step 5: Solve for x
    x = 4,824,896,470.08/86,904.80
  6. Step 6: Final answer
    x = 55,519.33

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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.