Home / 77,146.45-106,457.09-43,149.05

Finding the Fourth Proportional to 77,146.45, 106,457.09 and 43,149.05

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Solution

The fourth proportional to 77,146.45, 106,457.09 and 43,149.05 is: 59,542.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,146.45 : 106,457.09 = 43,149.05 : x
  2. Step 2: Convert to fraction form
    77,146.45/106,457.09 = 43,149.05/x
  3. Step 3: Cross multiply
    77,146.45x = 106,457.09 × 43,149.05
  4. Step 4: Simplify right side
    77,146.45x = 4,593,521,950.45
  5. Step 5: Solve for x
    x = 4,593,521,950.45/77,146.45
  6. Step 6: Final answer
    x = 59,542.88

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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.