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Finding the Fourth Proportional to 104,727.31, 144,520.84 and 56,979.63

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Solution

The fourth proportional to 104,727.31, 144,520.84 and 56,979.63 is: 78,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,727.31 : 144,520.84 = 56,979.63 : x
  2. Step 2: Convert to fraction form
    104,727.31/144,520.84 = 56,979.63/x
  3. Step 3: Cross multiply
    104,727.31x = 144,520.84 × 56,979.63
  4. Step 4: Simplify right side
    104,727.31x = 8,234,744,061.71
  5. Step 5: Solve for x
    x = 8,234,744,061.71/104,727.31
  6. Step 6: Final answer
    x = 78,630.34

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1.5x scale

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.