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Finding the Fourth Proportional to 56,063, 77,372.40 and 30,912.50

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Solution

The fourth proportional to 56,063, 77,372.40 and 30,912.50 is: 42,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,063 : 77,372.40 = 30,912.50 : x
  2. Step 2: Convert to fraction form
    56,063/77,372.40 = 30,912.50/x
  3. Step 3: Cross multiply
    56,063x = 77,372.40 × 30,912.50
  4. Step 4: Simplify right side
    56,063x = 2,391,774,315
  5. Step 5: Solve for x
    x = 2,391,774,315/56,063
  6. Step 6: Final answer
    x = 42,662.26

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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.