Home / 71,815.12-99,130.44-51,683.92

Finding the Fourth Proportional to 71,815.12, 99,130.44 and 51,683.92

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Solution

The fourth proportional to 71,815.12, 99,130.44 and 51,683.92 is: 71,342.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,815.12 : 99,130.44 = 51,683.92 : x
  2. Step 2: Convert to fraction form
    71,815.12/99,130.44 = 51,683.92/x
  3. Step 3: Cross multiply
    71,815.12x = 99,130.44 × 51,683.92
  4. Step 4: Simplify right side
    71,815.12x = 5,123,449,730.52
  5. Step 5: Solve for x
    x = 5,123,449,730.52/71,815.12
  6. Step 6: Final answer
    x = 71,342.21

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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.