Home / 86,848.20-130,491-55,272.78

Finding the Fourth Proportional to 86,848.20, 130,491 and 55,272.78

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Solution

The fourth proportional to 86,848.20, 130,491 and 55,272.78 is: 83,048.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,848.20 : 130,491 = 55,272.78 : x
  2. Step 2: Convert to fraction form
    86,848.20/130,491 = 55,272.78/x
  3. Step 3: Cross multiply
    86,848.20x = 130,491 × 55,272.78
  4. Step 4: Simplify right side
    86,848.20x = 7,212,600,334.98
  5. Step 5: Solve for x
    x = 7,212,600,334.98/86,848.20
  6. Step 6: Final answer
    x = 83,048.36

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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.