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Finding the Fourth Proportional to 56,247, 77,622.48 and 31,098.12

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Solution

The fourth proportional to 56,247, 77,622.48 and 31,098.12 is: 42,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,247 : 77,622.48 = 31,098.12 : x
  2. Step 2: Convert to fraction form
    56,247/77,622.48 = 31,098.12/x
  3. Step 3: Cross multiply
    56,247x = 77,622.48 × 31,098.12
  4. Step 4: Simplify right side
    56,247x = 2,413,913,197.74
  5. Step 5: Solve for x
    x = 2,413,913,197.74/56,247
  6. Step 6: Final answer
    x = 42,916.30

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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.