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Finding the Fourth Proportional to 57,401.72, 79,220.02 and 31,916.80

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Solution

The fourth proportional to 57,401.72, 79,220.02 and 31,916.80 is: 44,048.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,401.72 : 79,220.02 = 31,916.80 : x
  2. Step 2: Convert to fraction form
    57,401.72/79,220.02 = 31,916.80/x
  3. Step 3: Cross multiply
    57,401.72x = 79,220.02 × 31,916.80
  4. Step 4: Simplify right side
    57,401.72x = 2,528,449,534.34
  5. Step 5: Solve for x
    x = 2,528,449,534.34/57,401.72
  6. Step 6: Final answer
    x = 44,048.32

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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.