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Finding the Fourth Proportional to 66,866.88, 99,702.51 and 65,029.80

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Solution

The fourth proportional to 66,866.88, 99,702.51 and 65,029.80 is: 96,963.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,866.88 : 99,702.51 = 65,029.80 : x
  2. Step 2: Convert to fraction form
    66,866.88/99,702.51 = 65,029.80/x
  3. Step 3: Cross multiply
    66,866.88x = 99,702.51 × 65,029.80
  4. Step 4: Simplify right side
    66,866.88x = 6,483,634,284.80
  5. Step 5: Solve for x
    x = 6,483,634,284.80/66,866.88
  6. Step 6: Final answer
    x = 96,963.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.