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Finding the Fourth Proportional to 37,920.79, 56,881.22 and 10,218.79

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Solution

The fourth proportional to 37,920.79, 56,881.22 and 10,218.79 is: 15,328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,920.79 : 56,881.22 = 10,218.79 : x
  2. Step 2: Convert to fraction form
    37,920.79/56,881.22 = 10,218.79/x
  3. Step 3: Cross multiply
    37,920.79x = 56,881.22 × 10,218.79
  4. Step 4: Simplify right side
    37,920.79x = 581,257,242.12
  5. Step 5: Solve for x
    x = 581,257,242.12/37,920.79
  6. Step 6: Final answer
    x = 15,328.19

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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.