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Finding the Fourth Proportional to 68,984,043.20, 103,476,064.80 and 47,484,958.40

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Solution

The fourth proportional to 68,984,043.20, 103,476,064.80 and 47,484,958.40 is: 71,227,437.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,984,043.20 : 103,476,064.80 = 47,484,958.40 : x
  2. Step 2: Convert to fraction form
    68,984,043.20/103,476,064.80 = 47,484,958.40/x
  3. Step 3: Cross multiply
    68,984,043.20x = 103,476,064.80 × 47,484,958.40
  4. Step 4: Simplify right side
    68,984,043.20x = 4,913,556,632,423,704
  5. Step 5: Solve for x
    x = 4,913,556,632,423,704/68,984,043.20
  6. Step 6: Final answer
    x = 71,227,437.60

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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.