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Finding the Fourth Proportional to 66,764.79, 92,139.84 and 38,472.30

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Solution

The fourth proportional to 66,764.79, 92,139.84 and 38,472.30 is: 53,094.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,764.79 : 92,139.84 = 38,472.30 : x
  2. Step 2: Convert to fraction form
    66,764.79/92,139.84 = 38,472.30/x
  3. Step 3: Cross multiply
    66,764.79x = 92,139.84 × 38,472.30
  4. Step 4: Simplify right side
    66,764.79x = 3,544,831,566.43
  5. Step 5: Solve for x
    x = 3,544,831,566.43/66,764.79
  6. Step 6: Final answer
    x = 53,094.33

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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.