Home / 77,965.11-107,591.99-42,155.15

Finding the Fourth Proportional to 77,965.11, 107,591.99 and 42,155.15

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Solution

The fourth proportional to 77,965.11, 107,591.99 and 42,155.15 is: 58,174.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,965.11 : 107,591.99 = 42,155.15 : x
  2. Step 2: Convert to fraction form
    77,965.11/107,591.99 = 42,155.15/x
  3. Step 3: Cross multiply
    77,965.11x = 107,591.99 × 42,155.15
  4. Step 4: Simplify right side
    77,965.11x = 4,535,555,728.51
  5. Step 5: Solve for x
    x = 4,535,555,728.51/77,965.11
  6. Step 6: Final answer
    x = 58,174.17

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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.