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Finding the Fourth Proportional to 56,858.57, 85,287.85 and 31,916.13

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Solution

The fourth proportional to 56,858.57, 85,287.85 and 31,916.13 is: 47,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,858.57 : 85,287.85 = 31,916.13 : x
  2. Step 2: Convert to fraction form
    56,858.57/85,287.85 = 31,916.13/x
  3. Step 3: Cross multiply
    56,858.57x = 85,287.85 × 31,916.13
  4. Step 4: Simplify right side
    56,858.57x = 2,722,058,108.02
  5. Step 5: Solve for x
    x = 2,722,058,108.02/56,858.57
  6. Step 6: Final answer
    x = 47,874.19

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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.