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Finding the Fourth Proportional to 46,138.80, 63,674.19 and 28,228.80

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Solution

The fourth proportional to 46,138.80, 63,674.19 and 28,228.80 is: 38,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,138.80 : 63,674.19 = 28,228.80 : x
  2. Step 2: Convert to fraction form
    46,138.80/63,674.19 = 28,228.80/x
  3. Step 3: Cross multiply
    46,138.80x = 63,674.19 × 28,228.80
  4. Step 4: Simplify right side
    46,138.80x = 1,797,445,974.67
  5. Step 5: Solve for x
    x = 1,797,445,974.67/46,138.80
  6. Step 6: Final answer
    x = 38,957.36

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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.