Home / 72,171,119.40-99,589,986.18-40,807,631.40

Finding the Fourth Proportional to 72,171,119.40, 99,589,986.18 and 40,807,631.40

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Solution

The fourth proportional to 72,171,119.40, 99,589,986.18 and 40,807,631.40 is: 56,311,049.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,119.40 : 99,589,986.18 = 40,807,631.40 : x
  2. Step 2: Convert to fraction form
    72,171,119.40/99,589,986.18 = 40,807,631.40/x
  3. Step 3: Cross multiply
    72,171,119.40x = 99,589,986.18 × 40,807,631.40
  4. Step 4: Simplify right side
    72,171,119.40x = 4,064,031,447,164,534
  5. Step 5: Solve for x
    x = 4,064,031,447,164,534/72,171,119.40
  6. Step 6: Final answer
    x = 56,311,049.09

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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.