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Finding the Fourth Proportional to 69,820,927.80, 104,778,630.90 and 31,462,697.40

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Solution

The fourth proportional to 69,820,927.80, 104,778,630.90 and 31,462,697.40 is: 47,215,333.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,820,927.80 : 104,778,630.90 = 31,462,697.40 : x
  2. Step 2: Convert to fraction form
    69,820,927.80/104,778,630.90 = 31,462,697.40/x
  3. Step 3: Cross multiply
    69,820,927.80x = 104,778,630.90 × 31,462,697.40
  4. Step 4: Simplify right side
    69,820,927.80x = 3,296,618,357,992,989.50
  5. Step 5: Solve for x
    x = 3,296,618,357,992,989.50/69,820,927.80
  6. Step 6: Final answer
    x = 47,215,333.02

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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.