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Finding the Fourth Proportional to 57,039,375.52, 78,713,802.48 and 30,934,469.44

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Solution

The fourth proportional to 57,039,375.52, 78,713,802.48 and 30,934,469.44 is: 42,689,277.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,039,375.52 : 78,713,802.48 = 30,934,469.44 : x
  2. Step 2: Convert to fraction form
    57,039,375.52/78,713,802.48 = 30,934,469.44/x
  3. Step 3: Cross multiply
    57,039,375.52x = 78,713,802.48 × 30,934,469.44
  4. Step 4: Simplify right side
    57,039,375.52x = 2,434,969,717,323,756.50
  5. Step 5: Solve for x
    x = 2,434,969,717,323,756.50/57,039,375.52
  6. Step 6: Final answer
    x = 42,689,277.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.