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Finding the Fourth Proportional to 65,355.88, 98,071.08 and 54,395.32

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Solution

The fourth proportional to 65,355.88, 98,071.08 and 54,395.32 is: 81,623.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,355.88 : 98,071.08 = 54,395.32 : x
  2. Step 2: Convert to fraction form
    65,355.88/98,071.08 = 54,395.32/x
  3. Step 3: Cross multiply
    65,355.88x = 98,071.08 × 54,395.32
  4. Step 4: Simplify right side
    65,355.88x = 5,334,607,779.35
  5. Step 5: Solve for x
    x = 5,334,607,779.35/65,355.88
  6. Step 6: Final answer
    x = 81,623.99

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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.