Home / 86,298.41-129,444.54-30,138.30

Finding the Fourth Proportional to 86,298.41, 129,444.54 and 30,138.30

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Solution

The fourth proportional to 86,298.41, 129,444.54 and 30,138.30 is: 45,206.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,298.41 : 129,444.54 = 30,138.30 : x
  2. Step 2: Convert to fraction form
    86,298.41/129,444.54 = 30,138.30/x
  3. Step 3: Cross multiply
    86,298.41x = 129,444.54 × 30,138.30
  4. Step 4: Simplify right side
    86,298.41x = 3,901,238,379.88
  5. Step 5: Solve for x
    x = 3,901,238,379.88/86,298.41
  6. Step 6: Final answer
    x = 45,206.38

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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.