Home / 72,151.22-99,564.96-40,313.90

Finding the Fourth Proportional to 72,151.22, 99,564.96 and 40,313.90

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Solution

The fourth proportional to 72,151.22, 99,564.96 and 40,313.90 is: 55,631.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,151.22 : 99,564.96 = 40,313.90 : x
  2. Step 2: Convert to fraction form
    72,151.22/99,564.96 = 40,313.90/x
  3. Step 3: Cross multiply
    72,151.22x = 99,564.96 × 40,313.90
  4. Step 4: Simplify right side
    72,151.22x = 4,013,851,840.94
  5. Step 5: Solve for x
    x = 4,013,851,840.94/72,151.22
  6. Step 6: Final answer
    x = 55,631.10

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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.