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Finding the Fourth Proportional to 71,294,782.80, 106,955,923.16 and 30,353,472.12

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Solution

The fourth proportional to 71,294,782.80, 106,955,923.16 and 30,353,472.12 is: 45,536,061.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,294,782.80 : 106,955,923.16 = 30,353,472.12 : x
  2. Step 2: Convert to fraction form
    71,294,782.80/106,955,923.16 = 30,353,472.12/x
  3. Step 3: Cross multiply
    71,294,782.80x = 106,955,923.16 × 30,353,472.12
  4. Step 4: Simplify right side
    71,294,782.80x = 3,246,483,631,705,922.50
  5. Step 5: Solve for x
    x = 3,246,483,631,705,922.50/71,294,782.80
  6. Step 6: Final answer
    x = 45,536,061.75

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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.