Home / 78,345,143.25-108,002,349.83-54,750,425.01

Finding the Fourth Proportional to 78,345,143.25, 108,002,349.83 and 54,750,425.01

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Solution

The fourth proportional to 78,345,143.25, 108,002,349.83 and 54,750,425.01 is: 75,475,955.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,345,143.25 : 108,002,349.83 = 54,750,425.01 : x
  2. Step 2: Convert to fraction form
    78,345,143.25/108,002,349.83 = 54,750,425.01/x
  3. Step 3: Cross multiply
    78,345,143.25x = 108,002,349.83 × 54,750,425.01
  4. Step 4: Simplify right side
    78,345,143.25x = 5,913,174,554,997,449
  5. Step 5: Solve for x
    x = 5,913,174,554,997,449/78,345,143.25
  6. Step 6: Final answer
    x = 75,475,955.62

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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.