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Finding the Fourth Proportional to 73,575.36, 110,364.30 and 20,986.20

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Solution

The fourth proportional to 73,575.36, 110,364.30 and 20,986.20 is: 31,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,575.36 : 110,364.30 = 20,986.20 : x
  2. Step 2: Convert to fraction form
    73,575.36/110,364.30 = 20,986.20/x
  3. Step 3: Cross multiply
    73,575.36x = 110,364.30 × 20,986.20
  4. Step 4: Simplify right side
    73,575.36x = 2,316,127,272.66
  5. Step 5: Solve for x
    x = 2,316,127,272.66/73,575.36
  6. Step 6: Final answer
    x = 31,479.66

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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.