Home / 75,146.51-103,678.71-43,311.08

Finding the Fourth Proportional to 75,146.51, 103,678.71 and 43,311.08

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Solution

The fourth proportional to 75,146.51, 103,678.71 and 43,311.08 is: 59,755.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,146.51 : 103,678.71 = 43,311.08 : x
  2. Step 2: Convert to fraction form
    75,146.51/103,678.71 = 43,311.08/x
  3. Step 3: Cross multiply
    75,146.51x = 103,678.71 × 43,311.08
  4. Step 4: Simplify right side
    75,146.51x = 4,490,436,903.11
  5. Step 5: Solve for x
    x = 4,490,436,903.11/75,146.51
  6. Step 6: Final answer
    x = 59,755.76

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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.