Home / 65,390.14-90,215.17-42,742.20

Finding the Fourth Proportional to 65,390.14, 90,215.17 and 42,742.20

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Solution

The fourth proportional to 65,390.14, 90,215.17 and 42,742.20 is: 58,969.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,390.14 : 90,215.17 = 42,742.20 : x
  2. Step 2: Convert to fraction form
    65,390.14/90,215.17 = 42,742.20/x
  3. Step 3: Cross multiply
    65,390.14x = 90,215.17 × 42,742.20
  4. Step 4: Simplify right side
    65,390.14x = 3,855,994,839.17
  5. Step 5: Solve for x
    x = 3,855,994,839.17/65,390.14
  6. Step 6: Final answer
    x = 58,969.06

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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.