Home / 86,529.36-129,748.80-39,103.68

Finding the Fourth Proportional to 86,529.36, 129,748.80 and 39,103.68

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Solution

The fourth proportional to 86,529.36, 129,748.80 and 39,103.68 is: 58,635.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,529.36 : 129,748.80 = 39,103.68 : x
  2. Step 2: Convert to fraction form
    86,529.36/129,748.80 = 39,103.68/x
  3. Step 3: Cross multiply
    86,529.36x = 129,748.80 × 39,103.68
  4. Step 4: Simplify right side
    86,529.36x = 5,073,655,555.58
  5. Step 5: Solve for x
    x = 5,073,655,555.58/86,529.36
  6. Step 6: Final answer
    x = 58,635.08

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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.