Home / 72,222.55-99,667.04-40,391.45

Finding the Fourth Proportional to 72,222.55, 99,667.04 and 40,391.45

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Solution

The fourth proportional to 72,222.55, 99,667.04 and 40,391.45 is: 55,740.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,222.55 : 99,667.04 = 40,391.45 : x
  2. Step 2: Convert to fraction form
    72,222.55/99,667.04 = 40,391.45/x
  3. Step 3: Cross multiply
    72,222.55x = 99,667.04 × 40,391.45
  4. Step 4: Simplify right side
    72,222.55x = 4,025,696,262.81
  5. Step 5: Solve for x
    x = 4,025,696,262.81/72,222.55
  6. Step 6: Final answer
    x = 55,740.16

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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.