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Finding the Fourth Proportional to 74,843.40, 103,322.16 and 57,809.52

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Solution

The fourth proportional to 74,843.40, 103,322.16 and 57,809.52 is: 79,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,843.40 : 103,322.16 = 57,809.52 : x
  2. Step 2: Convert to fraction form
    74,843.40/103,322.16 = 57,809.52/x
  3. Step 3: Cross multiply
    74,843.40x = 103,322.16 × 57,809.52
  4. Step 4: Simplify right side
    74,843.40x = 5,973,004,474.96
  5. Step 5: Solve for x
    x = 5,973,004,474.96/74,843.40
  6. Step 6: Final answer
    x = 79,806.70

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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.