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Finding the Fourth Proportional to 64,223.40, 96,335.10 and 40,603.80

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Solution

The fourth proportional to 64,223.40, 96,335.10 and 40,603.80 is: 60,905.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,223.40 : 96,335.10 = 40,603.80 : x
  2. Step 2: Convert to fraction form
    64,223.40/96,335.10 = 40,603.80/x
  3. Step 3: Cross multiply
    64,223.40x = 96,335.10 × 40,603.80
  4. Step 4: Simplify right side
    64,223.40x = 3,911,571,133.38
  5. Step 5: Solve for x
    x = 3,911,571,133.38/64,223.40
  6. Step 6: Final answer
    x = 60,905.70

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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.