Home / 75,215.72-103,808.58-43,378.28

Finding the Fourth Proportional to 75,215.72, 103,808.58 and 43,378.28

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Solution

The fourth proportional to 75,215.72, 103,808.58 and 43,378.28 is: 59,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,215.72 : 103,808.58 = 43,378.28 : x
  2. Step 2: Convert to fraction form
    75,215.72/103,808.58 = 43,378.28/x
  3. Step 3: Cross multiply
    75,215.72x = 103,808.58 × 43,378.28
  4. Step 4: Simplify right side
    75,215.72x = 4,503,037,649.64
  5. Step 5: Solve for x
    x = 4,503,037,649.64/75,215.72
  6. Step 6: Final answer
    x = 59,868.30

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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.