Home / 72,231.74-99,666.51-40,400.90

Finding the Fourth Proportional to 72,231.74, 99,666.51 and 40,400.90

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Solution

The fourth proportional to 72,231.74, 99,666.51 and 40,400.90 is: 55,745.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,231.74 : 99,666.51 = 40,400.90 : x
  2. Step 2: Convert to fraction form
    72,231.74/99,666.51 = 40,400.90/x
  3. Step 3: Cross multiply
    72,231.74x = 99,666.51 × 40,400.90
  4. Step 4: Simplify right side
    72,231.74x = 4,026,616,703.86
  5. Step 5: Solve for x
    x = 4,026,616,703.86/72,231.74
  6. Step 6: Final answer
    x = 55,745.81

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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.