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Finding the Fourth Proportional to 66,157.92, 91,301.04 and 38,948.40

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Solution

The fourth proportional to 66,157.92, 91,301.04 and 38,948.40 is: 53,750.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,157.92 : 91,301.04 = 38,948.40 : x
  2. Step 2: Convert to fraction form
    66,157.92/91,301.04 = 38,948.40/x
  3. Step 3: Cross multiply
    66,157.92x = 91,301.04 × 38,948.40
  4. Step 4: Simplify right side
    66,157.92x = 3,556,029,426.34
  5. Step 5: Solve for x
    x = 3,556,029,426.34/66,157.92
  6. Step 6: Final answer
    x = 53,750.62

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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.