Home / 72,318.03-99,802.64-40,485.03

Finding the Fourth Proportional to 72,318.03, 99,802.64 and 40,485.03

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Solution

The fourth proportional to 72,318.03, 99,802.64 and 40,485.03 is: 55,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,318.03 : 99,802.64 = 40,485.03 : x
  2. Step 2: Convert to fraction form
    72,318.03/99,802.64 = 40,485.03/x
  3. Step 3: Cross multiply
    72,318.03x = 99,802.64 × 40,485.03
  4. Step 4: Simplify right side
    72,318.03x = 4,040,512,672.05
  5. Step 5: Solve for x
    x = 4,040,512,672.05/72,318.03
  6. Step 6: Final answer
    x = 55,871.44

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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.