Home / 77,969.21-107,597.57-42,159.24

Finding the Fourth Proportional to 77,969.21, 107,597.57 and 42,159.24

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Solution

The fourth proportional to 77,969.21, 107,597.57 and 42,159.24 is: 58,179.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,969.21 : 107,597.57 = 42,159.24 : x
  2. Step 2: Convert to fraction form
    77,969.21/107,597.57 = 42,159.24/x
  3. Step 3: Cross multiply
    77,969.21x = 107,597.57 × 42,159.24
  4. Step 4: Simplify right side
    77,969.21x = 4,536,231,566.25
  5. Step 5: Solve for x
    x = 4,536,231,566.25/77,969.21
  6. Step 6: Final answer
    x = 58,179.78

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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.