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Finding the Fourth Proportional to 91,668.45, 137,485.88 and 38,346.23

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Solution

The fourth proportional to 91,668.45, 137,485.88 and 38,346.23 is: 57,512.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,668.45 : 137,485.88 = 38,346.23 : x
  2. Step 2: Convert to fraction form
    91,668.45/137,485.88 = 38,346.23/x
  3. Step 3: Cross multiply
    91,668.45x = 137,485.88 × 38,346.23
  4. Step 4: Simplify right side
    91,668.45x = 5,272,064,722.17
  5. Step 5: Solve for x
    x = 5,272,064,722.17/91,668.45
  6. Step 6: Final answer
    x = 57,512.32

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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.