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Finding the Fourth Proportional to 66,697.40, 100,038.74 and 16,777.52

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Solution

The fourth proportional to 66,697.40, 100,038.74 and 16,777.52 is: 25,164.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,697.40 : 100,038.74 = 16,777.52 : x
  2. Step 2: Convert to fraction form
    66,697.40/100,038.74 = 16,777.52/x
  3. Step 3: Cross multiply
    66,697.40x = 100,038.74 × 16,777.52
  4. Step 4: Simplify right side
    66,697.40x = 1,678,402,127.33
  5. Step 5: Solve for x
    x = 1,678,402,127.33/66,697.40
  6. Step 6: Final answer
    x = 25,164.43

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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.