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Finding the Fourth Proportional to 66,077.40, 98,897.40 and 51,205.80

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Solution

The fourth proportional to 66,077.40, 98,897.40 and 51,205.80 is: 76,639.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,077.40 : 98,897.40 = 51,205.80 : x
  2. Step 2: Convert to fraction form
    66,077.40/98,897.40 = 51,205.80/x
  3. Step 3: Cross multiply
    66,077.40x = 98,897.40 × 51,205.80
  4. Step 4: Simplify right side
    66,077.40x = 5,064,120,484.92
  5. Step 5: Solve for x
    x = 5,064,120,484.92/66,077.40
  6. Step 6: Final answer
    x = 76,639.22

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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.