Home / 86,935.20-130,410-27,779.28

Finding the Fourth Proportional to 86,935.20, 130,410 and 27,779.28

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Solution

The fourth proportional to 86,935.20, 130,410 and 27,779.28 is: 41,671.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,935.20 : 130,410 = 27,779.28 : x
  2. Step 2: Convert to fraction form
    86,935.20/130,410 = 27,779.28/x
  3. Step 3: Cross multiply
    86,935.20x = 130,410 × 27,779.28
  4. Step 4: Simplify right side
    86,935.20x = 3,622,695,904.80
  5. Step 5: Solve for x
    x = 3,622,695,904.80/86,935.20
  6. Step 6: Final answer
    x = 41,671.22

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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.