Home / 72,144.22-99,557.10-40,313.38

Finding the Fourth Proportional to 72,144.22, 99,557.10 and 40,313.38

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Solution

The fourth proportional to 72,144.22, 99,557.10 and 40,313.38 is: 55,631.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,144.22 : 99,557.10 = 40,313.38 : x
  2. Step 2: Convert to fraction form
    72,144.22/99,557.10 = 40,313.38/x
  3. Step 3: Cross multiply
    72,144.22x = 99,557.10 × 40,313.38
  4. Step 4: Simplify right side
    72,144.22x = 4,013,483,204.00
  5. Step 5: Solve for x
    x = 4,013,483,204.00/72,144.22
  6. Step 6: Final answer
    x = 55,631.39

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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.