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Finding the Fourth Proportional to 75,314.92, 103,933.64 and 40,859.12

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Solution

The fourth proportional to 75,314.92, 103,933.64 and 40,859.12 is: 56,385.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,314.92 : 103,933.64 = 40,859.12 : x
  2. Step 2: Convert to fraction form
    75,314.92/103,933.64 = 40,859.12/x
  3. Step 3: Cross multiply
    75,314.92x = 103,933.64 × 40,859.12
  4. Step 4: Simplify right side
    75,314.92x = 4,246,637,068.80
  5. Step 5: Solve for x
    x = 4,246,637,068.80/75,314.92
  6. Step 6: Final answer
    x = 56,385.07

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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.