Home / 72,463.19-99,999.11-40,202.70

Finding the Fourth Proportional to 72,463.19, 99,999.11 and 40,202.70

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Solution

The fourth proportional to 72,463.19, 99,999.11 and 40,202.70 is: 55,479.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,463.19 : 99,999.11 = 40,202.70 : x
  2. Step 2: Convert to fraction form
    72,463.19/99,999.11 = 40,202.70/x
  3. Step 3: Cross multiply
    72,463.19x = 99,999.11 × 40,202.70
  4. Step 4: Simplify right side
    72,463.19x = 4,020,233,945.11
  5. Step 5: Solve for x
    x = 4,020,233,945.11/72,463.19
  6. Step 6: Final answer
    x = 55,479.67

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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.