Home / 47,686.80-65,787.24-28,813

Finding the Fourth Proportional to 47,686.80, 65,787.24 and 28,813

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Solution

The fourth proportional to 47,686.80, 65,787.24 and 28,813 is: 39,749.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,686.80 : 65,787.24 = 28,813 : x
  2. Step 2: Convert to fraction form
    47,686.80/65,787.24 = 28,813/x
  3. Step 3: Cross multiply
    47,686.80x = 65,787.24 × 28,813
  4. Step 4: Simplify right side
    47,686.80x = 1,895,527,746.12
  5. Step 5: Solve for x
    x = 1,895,527,746.12/47,686.80
  6. Step 6: Final answer
    x = 39,749.53

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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.