Home / 81,720.01-112,782.77-49,472.41

Finding the Fourth Proportional to 81,720.01, 112,782.77 and 49,472.41

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Solution

The fourth proportional to 81,720.01, 112,782.77 and 49,472.41 is: 68,277.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,720.01 : 112,782.77 = 49,472.41 : x
  2. Step 2: Convert to fraction form
    81,720.01/112,782.77 = 49,472.41/x
  3. Step 3: Cross multiply
    81,720.01x = 112,782.77 × 49,472.41
  4. Step 4: Simplify right side
    81,720.01x = 5,579,635,077.87
  5. Step 5: Solve for x
    x = 5,579,635,077.87/81,720.01
  6. Step 6: Final answer
    x = 68,277.46

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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.