Home / 47,620.31-65,718.74-28,763.51

Finding the Fourth Proportional to 47,620.31, 65,718.74 and 28,763.51

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Solution

The fourth proportional to 47,620.31, 65,718.74 and 28,763.51 is: 39,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,620.31 : 65,718.74 = 28,763.51 : x
  2. Step 2: Convert to fraction form
    47,620.31/65,718.74 = 28,763.51/x
  3. Step 3: Cross multiply
    47,620.31x = 65,718.74 × 28,763.51
  4. Step 4: Simplify right side
    47,620.31x = 1,890,301,378.49
  5. Step 5: Solve for x
    x = 1,890,301,378.49/47,620.31
  6. Step 6: Final answer
    x = 39,695.28

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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.