Home / 77,128.41-106,436.90-43,136.76

Finding the Fourth Proportional to 77,128.41, 106,436.90 and 43,136.76

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Solution

The fourth proportional to 77,128.41, 106,436.90 and 43,136.76 is: 59,528.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.41 : 106,436.90 = 43,136.76 : x
  2. Step 2: Convert to fraction form
    77,128.41/106,436.90 = 43,136.76/x
  3. Step 3: Cross multiply
    77,128.41x = 106,436.90 × 43,136.76
  4. Step 4: Simplify right side
    77,128.41x = 4,591,342,794.76
  5. Step 5: Solve for x
    x = 4,591,342,794.76/77,128.41
  6. Step 6: Final answer
    x = 59,528.55

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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.