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Finding the Fourth Proportional to 65,315.56, 97,431.12 and 63,129.02

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Solution

The fourth proportional to 65,315.56, 97,431.12 and 63,129.02 is: 94,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,315.56 : 97,431.12 = 63,129.02 : x
  2. Step 2: Convert to fraction form
    65,315.56/97,431.12 = 63,129.02/x
  3. Step 3: Cross multiply
    65,315.56x = 97,431.12 × 63,129.02
  4. Step 4: Simplify right side
    65,315.56x = 6,150,731,366.68
  5. Step 5: Solve for x
    x = 6,150,731,366.68/65,315.56
  6. Step 6: Final answer
    x = 94,169.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.