Home / 47,656.64-65,767.36-28,782.72

Finding the Fourth Proportional to 47,656.64, 65,767.36 and 28,782.72

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Solution

The fourth proportional to 47,656.64, 65,767.36 and 28,782.72 is: 39,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,656.64 : 65,767.36 = 28,782.72 : x
  2. Step 2: Convert to fraction form
    47,656.64/65,767.36 = 28,782.72/x
  3. Step 3: Cross multiply
    47,656.64x = 65,767.36 × 28,782.72
  4. Step 4: Simplify right side
    47,656.64x = 1,892,963,508.02
  5. Step 5: Solve for x
    x = 1,892,963,508.02/47,656.64
  6. Step 6: Final answer
    x = 39,720.88

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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.