Home / 47,801.12-65,947.92-28,931.36

Finding the Fourth Proportional to 47,801.12, 65,947.92 and 28,931.36

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Solution

The fourth proportional to 47,801.12, 65,947.92 and 28,931.36 is: 39,914.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,801.12 : 65,947.92 = 28,931.36 : x
  2. Step 2: Convert to fraction form
    47,801.12/65,947.92 = 28,931.36/x
  3. Step 3: Cross multiply
    47,801.12x = 65,947.92 × 28,931.36
  4. Step 4: Simplify right side
    47,801.12x = 1,907,963,014.77
  5. Step 5: Solve for x
    x = 1,907,963,014.77/47,801.12
  6. Step 6: Final answer
    x = 39,914.61

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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.