Home / 72,177.27-99,606.83-40,347.51

Finding the Fourth Proportional to 72,177.27, 99,606.83 and 40,347.51

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Solution

The fourth proportional to 72,177.27, 99,606.83 and 40,347.51 is: 55,680.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.27 : 99,606.83 = 40,347.51 : x
  2. Step 2: Convert to fraction form
    72,177.27/99,606.83 = 40,347.51/x
  3. Step 3: Cross multiply
    72,177.27x = 99,606.83 × 40,347.51
  4. Step 4: Simplify right side
    72,177.27x = 4,018,887,221.18
  5. Step 5: Solve for x
    x = 4,018,887,221.18/72,177.27
  6. Step 6: Final answer
    x = 55,680.79

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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.