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Finding the Fourth Proportional to 45,728.72, 63,115.44 and 29,784.72

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Solution

The fourth proportional to 45,728.72, 63,115.44 and 29,784.72 is: 41,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,728.72 : 63,115.44 = 29,784.72 : x
  2. Step 2: Convert to fraction form
    45,728.72/63,115.44 = 29,784.72/x
  3. Step 3: Cross multiply
    45,728.72x = 63,115.44 × 29,784.72
  4. Step 4: Simplify right side
    45,728.72x = 1,879,875,708.08
  5. Step 5: Solve for x
    x = 1,879,875,708.08/45,728.72
  6. Step 6: Final answer
    x = 41,109.30

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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.