Home / 72,895,289.82-109,420,744.66-31,416,636.20

Finding the Fourth Proportional to 72,895,289.82, 109,420,744.66 and 31,416,636.20

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Solution

The fourth proportional to 72,895,289.82, 109,420,744.66 and 31,416,636.20 is: 47,158,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,895,289.82 : 109,420,744.66 = 31,416,636.20 : x
  2. Step 2: Convert to fraction form
    72,895,289.82/109,420,744.66 = 31,416,636.20/x
  3. Step 3: Cross multiply
    72,895,289.82x = 109,420,744.66 × 31,416,636.20
  4. Step 4: Simplify right side
    72,895,289.82x = 3,437,631,727,169,209
  5. Step 5: Solve for x
    x = 3,437,631,727,169,209/72,895,289.82
  6. Step 6: Final answer
    x = 47,158,489.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.