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Finding the Fourth Proportional to 66,967.65, 100,451.48 and 52,187.63

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Solution

The fourth proportional to 66,967.65, 100,451.48 and 52,187.63 is: 78,281.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,967.65 : 100,451.48 = 52,187.63 : x
  2. Step 2: Convert to fraction form
    66,967.65/100,451.48 = 52,187.63/x
  3. Step 3: Cross multiply
    66,967.65x = 100,451.48 × 52,187.63
  4. Step 4: Simplify right side
    66,967.65x = 5,242,323,908.00
  5. Step 5: Solve for x
    x = 5,242,323,908.00/66,967.65
  6. Step 6: Final answer
    x = 78,281.44

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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.