Home / 77,120.91-106,426.10-43,129.46

Finding the Fourth Proportional to 77,120.91, 106,426.10 and 43,129.46

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Solution

The fourth proportional to 77,120.91, 106,426.10 and 43,129.46 is: 59,518.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,120.91 : 106,426.10 = 43,129.46 : x
  2. Step 2: Convert to fraction form
    77,120.91/106,426.10 = 43,129.46/x
  3. Step 3: Cross multiply
    77,120.91x = 106,426.10 × 43,129.46
  4. Step 4: Simplify right side
    77,120.91x = 4,590,100,596.79
  5. Step 5: Solve for x
    x = 4,590,100,596.79/77,120.91
  6. Step 6: Final answer
    x = 59,518.24

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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.