Home / 78,345,011.40-108,002,168.40-54,750,293.52

Finding the Fourth Proportional to 78,345,011.40, 108,002,168.40 and 54,750,293.52

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Solution

The fourth proportional to 78,345,011.40, 108,002,168.40 and 54,750,293.52 is: 75,475,774.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,345,011.40 : 108,002,168.40 = 54,750,293.52 : x
  2. Step 2: Convert to fraction form
    78,345,011.40/108,002,168.40 = 54,750,293.52/x
  3. Step 3: Cross multiply
    78,345,011.40x = 108,002,168.40 × 54,750,293.52
  4. Step 4: Simplify right side
    78,345,011.40x = 5,913,150,420,696,469
  5. Step 5: Solve for x
    x = 5,913,150,420,696,469/78,345,011.40
  6. Step 6: Final answer
    x = 75,475,774.59

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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.