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Finding the Fourth Proportional to 65,254.56, 97,915.32 and 31,974

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Solution

The fourth proportional to 65,254.56, 97,915.32 and 31,974 is: 47,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,254.56 : 97,915.32 = 31,974 : x
  2. Step 2: Convert to fraction form
    65,254.56/97,915.32 = 31,974/x
  3. Step 3: Cross multiply
    65,254.56x = 97,915.32 × 31,974
  4. Step 4: Simplify right side
    65,254.56x = 3,130,744,441.68
  5. Step 5: Solve for x
    x = 3,130,744,441.68/65,254.56
  6. Step 6: Final answer
    x = 47,977.40

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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.