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Finding the Fourth Proportional to 65,905.60, 99,088.80 and 64,523.20

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Solution

The fourth proportional to 65,905.60, 99,088.80 and 64,523.20 is: 97,010.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,905.60 : 99,088.80 = 64,523.20 : x
  2. Step 2: Convert to fraction form
    65,905.60/99,088.80 = 64,523.20/x
  3. Step 3: Cross multiply
    65,905.60x = 99,088.80 × 64,523.20
  4. Step 4: Simplify right side
    65,905.60x = 6,393,526,460.16
  5. Step 5: Solve for x
    x = 6,393,526,460.16/65,905.60
  6. Step 6: Final answer
    x = 97,010.37

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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.