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Finding the Fourth Proportional to 66,868.55, 100,459.55 and 63,085.64

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Solution

The fourth proportional to 66,868.55, 100,459.55 and 63,085.64 is: 94,776.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,868.55 : 100,459.55 = 63,085.64 : x
  2. Step 2: Convert to fraction form
    66,868.55/100,459.55 = 63,085.64/x
  3. Step 3: Cross multiply
    66,868.55x = 100,459.55 × 63,085.64
  4. Step 4: Simplify right side
    66,868.55x = 6,337,554,188.14
  5. Step 5: Solve for x
    x = 6,337,554,188.14/66,868.55
  6. Step 6: Final answer
    x = 94,776.31

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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.