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Finding the Fourth Proportional to 64,658.40, 96,831.84 and 43,818.72

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Solution

The fourth proportional to 64,658.40, 96,831.84 and 43,818.72 is: 65,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,658.40 : 96,831.84 = 43,818.72 : x
  2. Step 2: Convert to fraction form
    64,658.40/96,831.84 = 43,818.72/x
  3. Step 3: Cross multiply
    64,658.40x = 96,831.84 × 43,818.72
  4. Step 4: Simplify right side
    64,658.40x = 4,243,047,284.04
  5. Step 5: Solve for x
    x = 4,243,047,284.04/64,658.40
  6. Step 6: Final answer
    x = 65,622.52

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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.