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Finding the Fourth Proportional to 72,893.46, 109,340.12 and 56,277.74

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Solution

The fourth proportional to 72,893.46, 109,340.12 and 56,277.74 is: 84,416.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,893.46 : 109,340.12 = 56,277.74 : x
  2. Step 2: Convert to fraction form
    72,893.46/109,340.12 = 56,277.74/x
  3. Step 3: Cross multiply
    72,893.46x = 109,340.12 × 56,277.74
  4. Step 4: Simplify right side
    72,893.46x = 6,153,414,844.93
  5. Step 5: Solve for x
    x = 6,153,414,844.93/72,893.46
  6. Step 6: Final answer
    x = 84,416.56

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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.