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Finding the Fourth Proportional to 64,423.49, 96,638.27 and 53,157.93

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Solution

The fourth proportional to 64,423.49, 96,638.27 and 53,157.93 is: 79,739.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,423.49 : 96,638.27 = 53,157.93 : x
  2. Step 2: Convert to fraction form
    64,423.49/96,638.27 = 53,157.93/x
  3. Step 3: Cross multiply
    64,423.49x = 96,638.27 × 53,157.93
  4. Step 4: Simplify right side
    64,423.49x = 5,137,090,391.98
  5. Step 5: Solve for x
    x = 5,137,090,391.98/64,423.49
  6. Step 6: Final answer
    x = 79,739.40

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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.