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Finding the Fourth Proportional to 83,318,509.61, 124,978,178.58 and 34,161,213.11

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Solution

The fourth proportional to 83,318,509.61, 124,978,178.58 and 34,161,213.11 is: 51,241,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,318,509.61 : 124,978,178.58 = 34,161,213.11 : x
  2. Step 2: Convert to fraction form
    83,318,509.61/124,978,178.58 = 34,161,213.11/x
  3. Step 3: Cross multiply
    83,318,509.61x = 124,978,178.58 × 34,161,213.11
  4. Step 4: Simplify right side
    83,318,509.61x = 4,269,406,191,818,021.50
  5. Step 5: Solve for x
    x = 4,269,406,191,818,021.50/83,318,509.61
  6. Step 6: Final answer
    x = 51,241,989.47

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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.