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Finding the Fourth Proportional to 38,892.80, 58,252.80 and 31,980.80

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Solution

The fourth proportional to 38,892.80, 58,252.80 and 31,980.80 is: 47,900.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,892.80 : 58,252.80 = 31,980.80 : x
  2. Step 2: Convert to fraction form
    38,892.80/58,252.80 = 31,980.80/x
  3. Step 3: Cross multiply
    38,892.80x = 58,252.80 × 31,980.80
  4. Step 4: Simplify right side
    38,892.80x = 1,862,971,146.24
  5. Step 5: Solve for x
    x = 1,862,971,146.24/38,892.80
  6. Step 6: Final answer
    x = 47,900.15

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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.