Home / 77,139.45-106,462.30-43,149.83

Finding the Fourth Proportional to 77,139.45, 106,462.30 and 43,149.83

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Solution

The fourth proportional to 77,139.45, 106,462.30 and 43,149.83 is: 59,552.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,139.45 : 106,462.30 = 43,149.83 : x
  2. Step 2: Convert to fraction form
    77,139.45/106,462.30 = 43,149.83/x
  3. Step 3: Cross multiply
    77,139.45x = 106,462.30 × 43,149.83
  4. Step 4: Simplify right side
    77,139.45x = 4,593,830,146.41
  5. Step 5: Solve for x
    x = 4,593,830,146.41/77,139.45
  6. Step 6: Final answer
    x = 59,552.28

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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.