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Finding the Fourth Proportional to 66,764.16, 92,128.24 and 39,901.32

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Solution

The fourth proportional to 66,764.16, 92,128.24 and 39,901.32 is: 55,060.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,764.16 : 92,128.24 = 39,901.32 : x
  2. Step 2: Convert to fraction form
    66,764.16/92,128.24 = 39,901.32/x
  3. Step 3: Cross multiply
    66,764.16x = 92,128.24 × 39,901.32
  4. Step 4: Simplify right side
    66,764.16x = 3,676,038,385.28
  5. Step 5: Solve for x
    x = 3,676,038,385.28/66,764.16
  6. Step 6: Final answer
    x = 55,060.06

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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.