Home / 72,043.48-99,417.58-39,777.55

Finding the Fourth Proportional to 72,043.48, 99,417.58 and 39,777.55

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Solution

The fourth proportional to 72,043.48, 99,417.58 and 39,777.55 is: 54,891.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,043.48 : 99,417.58 = 39,777.55 : x
  2. Step 2: Convert to fraction form
    72,043.48/99,417.58 = 39,777.55/x
  3. Step 3: Cross multiply
    72,043.48x = 99,417.58 × 39,777.55
  4. Step 4: Simplify right side
    72,043.48x = 3,954,587,759.33
  5. Step 5: Solve for x
    x = 3,954,587,759.33/72,043.48
  6. Step 6: Final answer
    x = 54,891.68

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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.