Home / 31,123.85-46,487.31-28,157.72

Finding the Fourth Proportional to 31,123.85, 46,487.31 and 28,157.72

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Solution

The fourth proportional to 31,123.85, 46,487.31 and 28,157.72 is: 42,057.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,123.85 : 46,487.31 = 28,157.72 : x
  2. Step 2: Convert to fraction form
    31,123.85/46,487.31 = 28,157.72/x
  3. Step 3: Cross multiply
    31,123.85x = 46,487.31 × 28,157.72
  4. Step 4: Simplify right side
    31,123.85x = 1,308,976,658.53
  5. Step 5: Solve for x
    x = 1,308,976,658.53/31,123.85
  6. Step 6: Final answer
    x = 42,057.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.