Home / 75,120.64-103,666.58-43,288.72

Finding the Fourth Proportional to 75,120.64, 103,666.58 and 43,288.72

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Solution

The fourth proportional to 75,120.64, 103,666.58 and 43,288.72 is: 59,738.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,120.64 : 103,666.58 = 43,288.72 : x
  2. Step 2: Convert to fraction form
    75,120.64/103,666.58 = 43,288.72/x
  3. Step 3: Cross multiply
    75,120.64x = 103,666.58 × 43,288.72
  4. Step 4: Simplify right side
    75,120.64x = 4,487,593,554.98
  5. Step 5: Solve for x
    x = 4,487,593,554.98/75,120.64
  6. Step 6: Final answer
    x = 59,738.49

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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.