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Finding the Fourth Proportional to 66,926.72, 92,345.64 and 39,697.76

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Solution

The fourth proportional to 66,926.72, 92,345.64 and 39,697.76 is: 54,775.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,926.72 : 92,345.64 = 39,697.76 : x
  2. Step 2: Convert to fraction form
    66,926.72/92,345.64 = 39,697.76/x
  3. Step 3: Cross multiply
    66,926.72x = 92,345.64 × 39,697.76
  4. Step 4: Simplify right side
    66,926.72x = 3,665,915,053.77
  5. Step 5: Solve for x
    x = 3,665,915,053.77/66,926.72
  6. Step 6: Final answer
    x = 54,775.06

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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.