Home / 101,782.08-140,454-56,456.28

Finding the Fourth Proportional to 101,782.08, 140,454 and 56,456.28

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Solution

The fourth proportional to 101,782.08, 140,454 and 56,456.28 is: 77,906.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,782.08 : 140,454 = 56,456.28 : x
  2. Step 2: Convert to fraction form
    101,782.08/140,454 = 56,456.28/x
  3. Step 3: Cross multiply
    101,782.08x = 140,454 × 56,456.28
  4. Step 4: Simplify right side
    101,782.08x = 7,929,510,351.12
  5. Step 5: Solve for x
    x = 7,929,510,351.12/101,782.08
  6. Step 6: Final answer
    x = 77,906.74

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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.