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Finding the Fourth Proportional to 66,855.44, 92,237.88 and 38,560.40

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Solution

The fourth proportional to 66,855.44, 92,237.88 and 38,560.40 is: 53,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,855.44 : 92,237.88 = 38,560.40 : x
  2. Step 2: Convert to fraction form
    66,855.44/92,237.88 = 38,560.40/x
  3. Step 3: Cross multiply
    66,855.44x = 92,237.88 × 38,560.40
  4. Step 4: Simplify right side
    66,855.44x = 3,556,729,547.95
  5. Step 5: Solve for x
    x = 3,556,729,547.95/66,855.44
  6. Step 6: Final answer
    x = 53,200.30

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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.