Home / 76,113.05-105,033.87-42,122.96

Finding the Fourth Proportional to 76,113.05, 105,033.87 and 42,122.96

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Solution

The fourth proportional to 76,113.05, 105,033.87 and 42,122.96 is: 58,128.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,113.05 : 105,033.87 = 42,122.96 : x
  2. Step 2: Convert to fraction form
    76,113.05/105,033.87 = 42,122.96/x
  3. Step 3: Cross multiply
    76,113.05x = 105,033.87 × 42,122.96
  4. Step 4: Simplify right side
    76,113.05x = 4,424,336,979.49
  5. Step 5: Solve for x
    x = 4,424,336,979.49/76,113.05
  6. Step 6: Final answer
    x = 58,128.49

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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.