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Finding the Fourth Proportional to 77,781.64, 116,789.10 and 44,539.24

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Solution

The fourth proportional to 77,781.64, 116,789.10 and 44,539.24 is: 66,875.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,781.64 : 116,789.10 = 44,539.24 : x
  2. Step 2: Convert to fraction form
    77,781.64/116,789.10 = 44,539.24/x
  3. Step 3: Cross multiply
    77,781.64x = 116,789.10 × 44,539.24
  4. Step 4: Simplify right side
    77,781.64x = 5,201,697,754.28
  5. Step 5: Solve for x
    x = 5,201,697,754.28/77,781.64
  6. Step 6: Final answer
    x = 66,875.65

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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.