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Finding the Fourth Proportional to 92,883,739.08, 128,171,978.83 and 54,686,838.85

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Solution

The fourth proportional to 92,883,739.08, 128,171,978.83 and 54,686,838.85 is: 75,463,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,883,739.08 : 128,171,978.83 = 54,686,838.85 : x
  2. Step 2: Convert to fraction form
    92,883,739.08/128,171,978.83 = 54,686,838.85/x
  3. Step 3: Cross multiply
    92,883,739.08x = 128,171,978.83 × 54,686,838.85
  4. Step 4: Simplify right side
    92,883,739.08x = 7,009,320,351,361,822
  5. Step 5: Solve for x
    x = 7,009,320,351,361,822/92,883,739.08
  6. Step 6: Final answer
    x = 75,463,374.11

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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.