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Finding the Fourth Proportional to 35,612.56, 53,389.56 and 20,784.88

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Solution

The fourth proportional to 35,612.56, 53,389.56 and 20,784.88 is: 31,160.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,612.56 : 53,389.56 = 20,784.88 : x
  2. Step 2: Convert to fraction form
    35,612.56/53,389.56 = 20,784.88/x
  3. Step 3: Cross multiply
    35,612.56x = 53,389.56 × 20,784.88
  4. Step 4: Simplify right side
    35,612.56x = 1,109,695,597.85
  5. Step 5: Solve for x
    x = 1,109,695,597.85/35,612.56
  6. Step 6: Final answer
    x = 31,160.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.