Home / 74,146.82-102,322.70-40,155.36

Finding the Fourth Proportional to 74,146.82, 102,322.70 and 40,155.36

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Solution

The fourth proportional to 74,146.82, 102,322.70 and 40,155.36 is: 55,414.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,146.82 : 102,322.70 = 40,155.36 : x
  2. Step 2: Convert to fraction form
    74,146.82/102,322.70 = 40,155.36/x
  3. Step 3: Cross multiply
    74,146.82x = 102,322.70 × 40,155.36
  4. Step 4: Simplify right side
    74,146.82x = 4,108,804,854.67
  5. Step 5: Solve for x
    x = 4,108,804,854.67/74,146.82
  6. Step 6: Final answer
    x = 55,414.44

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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.