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Finding the Fourth Proportional to 93,271.26, 128,419.21 and 84,747.87

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Solution

The fourth proportional to 93,271.26, 128,419.21 and 84,747.87 is: 116,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,271.26 : 128,419.21 = 84,747.87 : x
  2. Step 2: Convert to fraction form
    93,271.26/128,419.21 = 84,747.87/x
  3. Step 3: Cross multiply
    93,271.26x = 128,419.21 × 84,747.87
  4. Step 4: Simplify right side
    93,271.26x = 10,883,254,514.58
  5. Step 5: Solve for x
    x = 10,883,254,514.58/93,271.26
  6. Step 6: Final answer
    x = 116,683.90

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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.