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Finding the Fourth Proportional to 75,277.72, 103,622.48 and 65,064.06

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Solution

The fourth proportional to 75,277.72, 103,622.48 and 65,064.06 is: 89,563.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,277.72 : 103,622.48 = 65,064.06 : x
  2. Step 2: Convert to fraction form
    75,277.72/103,622.48 = 65,064.06/x
  3. Step 3: Cross multiply
    75,277.72x = 103,622.48 × 65,064.06
  4. Step 4: Simplify right side
    75,277.72x = 6,742,099,256.07
  5. Step 5: Solve for x
    x = 6,742,099,256.07/75,277.72
  6. Step 6: Final answer
    x = 89,563.01

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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.