Home / 72,144.42-99,558.82-40,313.40

Finding the Fourth Proportional to 72,144.42, 99,558.82 and 40,313.40

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Solution

The fourth proportional to 72,144.42, 99,558.82 and 40,313.40 is: 55,632.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,144.42 : 99,558.82 = 40,313.40 : x
  2. Step 2: Convert to fraction form
    72,144.42/99,558.82 = 40,313.40/x
  3. Step 3: Cross multiply
    72,144.42x = 99,558.82 × 40,313.40
  4. Step 4: Simplify right side
    72,144.42x = 4,013,554,534.19
  5. Step 5: Solve for x
    x = 4,013,554,534.19/72,144.42
  6. Step 6: Final answer
    x = 55,632.22

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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.