Home / 77,729.12-107,216.16-45,896.12

Finding the Fourth Proportional to 77,729.12, 107,216.16 and 45,896.12

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Solution

The fourth proportional to 77,729.12, 107,216.16 and 45,896.12 is: 63,307.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,729.12 : 107,216.16 = 45,896.12 : x
  2. Step 2: Convert to fraction form
    77,729.12/107,216.16 = 45,896.12/x
  3. Step 3: Cross multiply
    77,729.12x = 107,216.16 × 45,896.12
  4. Step 4: Simplify right side
    77,729.12x = 4,920,805,745.30
  5. Step 5: Solve for x
    x = 4,920,805,745.30/77,729.12
  6. Step 6: Final answer
    x = 63,307.11

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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.