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Finding the Fourth Proportional to 65,182.68, 89,925.30 and 39,668.58

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Solution

The fourth proportional to 65,182.68, 89,925.30 and 39,668.58 is: 54,726.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,182.68 : 89,925.30 = 39,668.58 : x
  2. Step 2: Convert to fraction form
    65,182.68/89,925.30 = 39,668.58/x
  3. Step 3: Cross multiply
    65,182.68x = 89,925.30 × 39,668.58
  4. Step 4: Simplify right side
    65,182.68x = 3,567,208,957.07
  5. Step 5: Solve for x
    x = 3,567,208,957.07/65,182.68
  6. Step 6: Final answer
    x = 54,726.33

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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.