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Finding the Fourth Proportional to 66,462.50, 99,693.76 and 17,214.50

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Solution

The fourth proportional to 66,462.50, 99,693.76 and 17,214.50 is: 25,821.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,462.50 : 99,693.76 = 17,214.50 : x
  2. Step 2: Convert to fraction form
    66,462.50/99,693.76 = 17,214.50/x
  3. Step 3: Cross multiply
    66,462.50x = 99,693.76 × 17,214.50
  4. Step 4: Simplify right side
    66,462.50x = 1,716,178,231.52
  5. Step 5: Solve for x
    x = 1,716,178,231.52/66,462.50
  6. Step 6: Final answer
    x = 25,821.75

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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.