Home / 72,176.27-99,603.38-40,345.14

Finding the Fourth Proportional to 72,176.27, 99,603.38 and 40,345.14

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Solution

The fourth proportional to 72,176.27, 99,603.38 and 40,345.14 is: 55,676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,176.27 : 99,603.38 = 40,345.14 : x
  2. Step 2: Convert to fraction form
    72,176.27/99,603.38 = 40,345.14/x
  3. Step 3: Cross multiply
    72,176.27x = 99,603.38 × 40,345.14
  4. Step 4: Simplify right side
    72,176.27x = 4,018,512,108.85
  5. Step 5: Solve for x
    x = 4,018,512,108.85/72,176.27
  6. Step 6: Final answer
    x = 55,676.37

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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.