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Finding the Fourth Proportional to 86,784.63, 130,194.36 and 36,864.33

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Solution

The fourth proportional to 86,784.63, 130,194.36 and 36,864.33 is: 55,303.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,784.63 : 130,194.36 = 36,864.33 : x
  2. Step 2: Convert to fraction form
    86,784.63/130,194.36 = 36,864.33/x
  3. Step 3: Cross multiply
    86,784.63x = 130,194.36 × 36,864.33
  4. Step 4: Simplify right side
    86,784.63x = 4,799,527,851.18
  5. Step 5: Solve for x
    x = 4,799,527,851.18/86,784.63
  6. Step 6: Final answer
    x = 55,303.89

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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.