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Finding the Fourth Proportional to 60,207.81, 90,308.07 and 18,654.81

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Solution

The fourth proportional to 60,207.81, 90,308.07 and 18,654.81 is: 27,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,207.81 : 90,308.07 = 18,654.81 : x
  2. Step 2: Convert to fraction form
    60,207.81/90,308.07 = 18,654.81/x
  3. Step 3: Cross multiply
    60,207.81x = 90,308.07 × 18,654.81
  4. Step 4: Simplify right side
    60,207.81x = 1,684,679,887.32
  5. Step 5: Solve for x
    x = 1,684,679,887.32/60,207.81
  6. Step 6: Final answer
    x = 27,981.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.