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Finding the Fourth Proportional to 85,374.94, 128,077.44 and 29,201.86

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Solution

The fourth proportional to 85,374.94, 128,077.44 and 29,201.86 is: 43,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,374.94 : 128,077.44 = 29,201.86 : x
  2. Step 2: Convert to fraction form
    85,374.94/128,077.44 = 29,201.86/x
  3. Step 3: Cross multiply
    85,374.94x = 128,077.44 × 29,201.86
  4. Step 4: Simplify right side
    85,374.94x = 3,740,099,472.04
  5. Step 5: Solve for x
    x = 3,740,099,472.04/85,374.94
  6. Step 6: Final answer
    x = 43,807.93

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1.5x scale

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.