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Finding the Fourth Proportional to 86,636.52, 130,006.62 and 79,586.28

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Solution

The fourth proportional to 86,636.52, 130,006.62 and 79,586.28 is: 119,427.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,636.52 : 130,006.62 = 79,586.28 : x
  2. Step 2: Convert to fraction form
    86,636.52/130,006.62 = 79,586.28/x
  3. Step 3: Cross multiply
    86,636.52x = 130,006.62 × 79,586.28
  4. Step 4: Simplify right side
    86,636.52x = 10,346,743,261.17
  5. Step 5: Solve for x
    x = 10,346,743,261.17/86,636.52
  6. Step 6: Final answer
    x = 119,427.04

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1.5x scale

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.