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Finding the Fourth Proportional to 75,043, 103,561.28 and 45,236.92

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Solution

The fourth proportional to 75,043, 103,561.28 and 45,236.92 is: 62,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,043 : 103,561.28 = 45,236.92 : x
  2. Step 2: Convert to fraction form
    75,043/103,561.28 = 45,236.92/x
  3. Step 3: Cross multiply
    75,043x = 103,561.28 × 45,236.92
  4. Step 4: Simplify right side
    75,043x = 4,684,793,338.46
  5. Step 5: Solve for x
    x = 4,684,793,338.46/75,043
  6. Step 6: Final answer
    x = 62,428.12

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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.