Home / 81,548.61-112,538.22-49,278.75

Finding the Fourth Proportional to 81,548.61, 112,538.22 and 49,278.75

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Solution

The fourth proportional to 81,548.61, 112,538.22 and 49,278.75 is: 68,005.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,548.61 : 112,538.22 = 49,278.75 : x
  2. Step 2: Convert to fraction form
    81,548.61/112,538.22 = 49,278.75/x
  3. Step 3: Cross multiply
    81,548.61x = 112,538.22 × 49,278.75
  4. Step 4: Simplify right side
    81,548.61x = 5,545,742,808.83
  5. Step 5: Solve for x
    x = 5,545,742,808.83/81,548.61
  6. Step 6: Final answer
    x = 68,005.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.