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Finding the Fourth Proportional to 63,640.80, 87,824.40 and 35,345.76

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Solution

The fourth proportional to 63,640.80, 87,824.40 and 35,345.76 is: 48,777.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,640.80 : 87,824.40 = 35,345.76 : x
  2. Step 2: Convert to fraction form
    63,640.80/87,824.40 = 35,345.76/x
  3. Step 3: Cross multiply
    63,640.80x = 87,824.40 × 35,345.76
  4. Step 4: Simplify right side
    63,640.80x = 3,104,220,164.54
  5. Step 5: Solve for x
    x = 3,104,220,164.54/63,640.80
  6. Step 6: Final answer
    x = 48,777.20

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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.