Home / 77,163.20-106,484.64-43,630.40

Finding the Fourth Proportional to 77,163.20, 106,484.64 and 43,630.40

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Solution

The fourth proportional to 77,163.20, 106,484.64 and 43,630.40 is: 60,209.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,163.20 : 106,484.64 = 43,630.40 : x
  2. Step 2: Convert to fraction form
    77,163.20/106,484.64 = 43,630.40/x
  3. Step 3: Cross multiply
    77,163.20x = 106,484.64 × 43,630.40
  4. Step 4: Simplify right side
    77,163.20x = 4,645,967,437.06
  5. Step 5: Solve for x
    x = 4,645,967,437.06/77,163.20
  6. Step 6: Final answer
    x = 60,209.63

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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.