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Finding the Fourth Proportional to 91,324.64, 137,014.66 and 64,722.06

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Solution

The fourth proportional to 91,324.64, 137,014.66 and 64,722.06 is: 97,102.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,324.64 : 137,014.66 = 64,722.06 : x
  2. Step 2: Convert to fraction form
    91,324.64/137,014.66 = 64,722.06/x
  3. Step 3: Cross multiply
    91,324.64x = 137,014.66 × 64,722.06
  4. Step 4: Simplify right side
    91,324.64x = 8,867,871,045.40
  5. Step 5: Solve for x
    x = 8,867,871,045.40/91,324.64
  6. Step 6: Final answer
    x = 97,102.72

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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.