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Finding the Fourth Proportional to 68,676,901.20, 103,015,351.80 and 59,429,827.80

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Solution

The fourth proportional to 68,676,901.20, 103,015,351.80 and 59,429,827.80 is: 89,144,741.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,676,901.20 : 103,015,351.80 = 59,429,827.80 : x
  2. Step 2: Convert to fraction form
    68,676,901.20/103,015,351.80 = 59,429,827.80/x
  3. Step 3: Cross multiply
    68,676,901.20x = 103,015,351.80 × 59,429,827.80
  4. Step 4: Simplify right side
    68,676,901.20x = 6,122,184,618,230,420
  5. Step 5: Solve for x
    x = 6,122,184,618,230,420/68,676,901.20
  6. Step 6: Final answer
    x = 89,144,741.70

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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.