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Finding the Fourth Proportional to 70,072.77, 96,702.69 and 39,857.32

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Solution

The fourth proportional to 70,072.77, 96,702.69 and 39,857.32 is: 55,004.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,072.77 : 96,702.69 = 39,857.32 : x
  2. Step 2: Convert to fraction form
    70,072.77/96,702.69 = 39,857.32/x
  3. Step 3: Cross multiply
    70,072.77x = 96,702.69 × 39,857.32
  4. Step 4: Simplify right side
    70,072.77x = 3,854,310,060.19
  5. Step 5: Solve for x
    x = 3,854,310,060.19/70,072.77
  6. Step 6: Final answer
    x = 55,004.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.