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Finding the Fourth Proportional to 83,681.72, 115,452.26 and 53,484.48

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Solution

The fourth proportional to 83,681.72, 115,452.26 and 53,484.48 is: 73,790.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,681.72 : 115,452.26 = 53,484.48 : x
  2. Step 2: Convert to fraction form
    83,681.72/115,452.26 = 53,484.48/x
  3. Step 3: Cross multiply
    83,681.72x = 115,452.26 × 53,484.48
  4. Step 4: Simplify right side
    83,681.72x = 6,174,904,090.92
  5. Step 5: Solve for x
    x = 6,174,904,090.92/83,681.72
  6. Step 6: Final answer
    x = 73,790.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.