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Finding the Fourth Proportional to 66,702.39, 100,053.58 and 31,622.91

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Solution

The fourth proportional to 66,702.39, 100,053.58 and 31,622.91 is: 47,434.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,702.39 : 100,053.58 = 31,622.91 : x
  2. Step 2: Convert to fraction form
    66,702.39/100,053.58 = 31,622.91/x
  3. Step 3: Cross multiply
    66,702.39x = 100,053.58 × 31,622.91
  4. Step 4: Simplify right side
    66,702.39x = 3,163,984,855.25
  5. Step 5: Solve for x
    x = 3,163,984,855.25/66,702.39
  6. Step 6: Final answer
    x = 47,434.36

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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.