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Finding the Fourth Proportional to 65,646.99, 90,609.44 and 45,001.71

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Solution

The fourth proportional to 65,646.99, 90,609.44 and 45,001.71 is: 62,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,646.99 : 90,609.44 = 45,001.71 : x
  2. Step 2: Convert to fraction form
    65,646.99/90,609.44 = 45,001.71/x
  3. Step 3: Cross multiply
    65,646.99x = 90,609.44 × 45,001.71
  4. Step 4: Simplify right side
    65,646.99x = 4,077,579,517.13
  5. Step 5: Solve for x
    x = 4,077,579,517.13/65,646.99
  6. Step 6: Final answer
    x = 62,113.73

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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.