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Finding the Fourth Proportional to 64,423.79, 96,644.79 and 20,055.02

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Solution

The fourth proportional to 64,423.79, 96,644.79 and 20,055.02 is: 30,085.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,423.79 : 96,644.79 = 20,055.02 : x
  2. Step 2: Convert to fraction form
    64,423.79/96,644.79 = 20,055.02/x
  3. Step 3: Cross multiply
    64,423.79x = 96,644.79 × 20,055.02
  4. Step 4: Simplify right side
    64,423.79x = 1,938,212,713.12
  5. Step 5: Solve for x
    x = 1,938,212,713.12/64,423.79
  6. Step 6: Final answer
    x = 30,085.36

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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.