Home / 101,739.52-140,396.64-56,419.36

Finding the Fourth Proportional to 101,739.52, 140,396.64 and 56,419.36

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Solution

The fourth proportional to 101,739.52, 140,396.64 and 56,419.36 is: 77,856.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,739.52 : 140,396.64 = 56,419.36 : x
  2. Step 2: Convert to fraction form
    101,739.52/140,396.64 = 56,419.36/x
  3. Step 3: Cross multiply
    101,739.52x = 140,396.64 × 56,419.36
  4. Step 4: Simplify right side
    101,739.52x = 7,921,088,574.95
  5. Step 5: Solve for x
    x = 7,921,088,574.95/101,739.52
  6. Step 6: Final answer
    x = 77,856.56

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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.