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Finding the Fourth Proportional to 75,446.94, 112,617.20 and 66,590.94

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Solution

The fourth proportional to 75,446.94, 112,617.20 and 66,590.94 is: 99,398.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,446.94 : 112,617.20 = 66,590.94 : x
  2. Step 2: Convert to fraction form
    75,446.94/112,617.20 = 66,590.94/x
  3. Step 3: Cross multiply
    75,446.94x = 112,617.20 × 66,590.94
  4. Step 4: Simplify right side
    75,446.94x = 7,499,284,875.21
  5. Step 5: Solve for x
    x = 7,499,284,875.21/75,446.94
  6. Step 6: Final answer
    x = 99,398.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.