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Finding the Fourth Proportional to 90,681.66, 125,008.80 and 63,372.96

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Solution

The fourth proportional to 90,681.66, 125,008.80 and 63,372.96 is: 87,362.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,681.66 : 125,008.80 = 63,372.96 : x
  2. Step 2: Convert to fraction form
    90,681.66/125,008.80 = 63,372.96/x
  3. Step 3: Cross multiply
    90,681.66x = 125,008.80 × 63,372.96
  4. Step 4: Simplify right side
    90,681.66x = 7,922,177,682.05
  5. Step 5: Solve for x
    x = 7,922,177,682.05/90,681.66
  6. Step 6: Final answer
    x = 87,362.51

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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.