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Finding the Fourth Proportional to 66,362.60, 91,609.98 and 39,514.52

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Solution

The fourth proportional to 66,362.60, 91,609.98 and 39,514.52 is: 54,547.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,362.60 : 91,609.98 = 39,514.52 : x
  2. Step 2: Convert to fraction form
    66,362.60/91,609.98 = 39,514.52/x
  3. Step 3: Cross multiply
    66,362.60x = 91,609.98 × 39,514.52
  4. Step 4: Simplify right side
    66,362.60x = 3,619,924,386.91
  5. Step 5: Solve for x
    x = 3,619,924,386.91/66,362.60
  6. Step 6: Final answer
    x = 54,547.66

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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.