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Finding the Fourth Proportional to 86,649.28, 129,973.26 and 35,357.74

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Solution

The fourth proportional to 86,649.28, 129,973.26 and 35,357.74 is: 53,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,649.28 : 129,973.26 = 35,357.74 : x
  2. Step 2: Convert to fraction form
    86,649.28/129,973.26 = 35,357.74/x
  3. Step 3: Cross multiply
    86,649.28x = 129,973.26 × 35,357.74
  4. Step 4: Simplify right side
    86,649.28x = 4,595,560,734.03
  5. Step 5: Solve for x
    x = 4,595,560,734.03/86,649.28
  6. Step 6: Final answer
    x = 53,036.34

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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.