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Finding the Fourth Proportional to 28,335,658.55, 42,503,725.91 and 7,866,974.16

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Solution

The fourth proportional to 28,335,658.55, 42,503,725.91 and 7,866,974.16 is: 11,800,527.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335,658.55 : 42,503,725.91 = 7,866,974.16 : x
  2. Step 2: Convert to fraction form
    28,335,658.55/42,503,725.91 = 7,866,974.16/x
  3. Step 3: Cross multiply
    28,335,658.55x = 42,503,725.91 × 7,866,974.16
  4. Step 4: Simplify right side
    28,335,658.55x = 334,375,713,457,359.94
  5. Step 5: Solve for x
    x = 334,375,713,457,359.94/28,335,658.55
  6. Step 6: Final answer
    x = 11,800,527.34

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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.