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Finding the Fourth Proportional to 69,012,946.80, 103,431,502.80 and 36,680,338.80

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Solution

The fourth proportional to 69,012,946.80, 103,431,502.80 and 36,680,338.80 is: 54,973,780.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,012,946.80 : 103,431,502.80 = 36,680,338.80 : x
  2. Step 2: Convert to fraction form
    69,012,946.80/103,431,502.80 = 36,680,338.80/x
  3. Step 3: Cross multiply
    69,012,946.80x = 103,431,502.80 × 36,680,338.80
  4. Step 4: Simplify right side
    69,012,946.80x = 3,793,902,565,297,148
  5. Step 5: Solve for x
    x = 3,793,902,565,297,148/69,012,946.80
  6. Step 6: Final answer
    x = 54,973,780.16

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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.