Home / 72,036.75-99,416.19-39,777.58

Finding the Fourth Proportional to 72,036.75, 99,416.19 and 39,777.58

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Solution

The fourth proportional to 72,036.75, 99,416.19 and 39,777.58 is: 54,896.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,036.75 : 99,416.19 = 39,777.58 : x
  2. Step 2: Convert to fraction form
    72,036.75/99,416.19 = 39,777.58/x
  3. Step 3: Cross multiply
    72,036.75x = 99,416.19 × 39,777.58
  4. Step 4: Simplify right side
    72,036.75x = 3,954,535,451.02
  5. Step 5: Solve for x
    x = 3,954,535,451.02/72,036.75
  6. Step 6: Final answer
    x = 54,896.08

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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.