Home / 77,973.21-107,603.09-42,163.24

Finding the Fourth Proportional to 77,973.21, 107,603.09 and 42,163.24

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Solution

The fourth proportional to 77,973.21, 107,603.09 and 42,163.24 is: 58,185.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,973.21 : 107,603.09 = 42,163.24 : x
  2. Step 2: Convert to fraction form
    77,973.21/107,603.09 = 42,163.24/x
  3. Step 3: Cross multiply
    77,973.21x = 107,603.09 × 42,163.24
  4. Step 4: Simplify right side
    77,973.21x = 4,536,894,908.41
  5. Step 5: Solve for x
    x = 4,536,894,908.41/77,973.21
  6. Step 6: Final answer
    x = 58,185.30

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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.