Home / 72,060.18-99,431.19-40,223.94

Finding the Fourth Proportional to 72,060.18, 99,431.19 and 40,223.94

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Solution

The fourth proportional to 72,060.18, 99,431.19 and 40,223.94 is: 55,502.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,060.18 : 99,431.19 = 40,223.94 : x
  2. Step 2: Convert to fraction form
    72,060.18/99,431.19 = 40,223.94/x
  3. Step 3: Cross multiply
    72,060.18x = 99,431.19 × 40,223.94
  4. Step 4: Simplify right side
    72,060.18x = 3,999,514,220.69
  5. Step 5: Solve for x
    x = 3,999,514,220.69/72,060.18
  6. Step 6: Final answer
    x = 55,502.42

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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.