Home / 72,027.68-99,403.71-39,768.52

Finding the Fourth Proportional to 72,027.68, 99,403.71 and 39,768.52

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Solution

The fourth proportional to 72,027.68, 99,403.71 and 39,768.52 is: 54,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,027.68 : 99,403.71 = 39,768.52 : x
  2. Step 2: Convert to fraction form
    72,027.68/99,403.71 = 39,768.52/x
  3. Step 3: Cross multiply
    72,027.68x = 99,403.71 × 39,768.52
  4. Step 4: Simplify right side
    72,027.68x = 3,953,138,429.21
  5. Step 5: Solve for x
    x = 3,953,138,429.21/72,027.68
  6. Step 6: Final answer
    x = 54,883.60

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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.