Home / 86,289.54-129,465.45-30,137.91

Finding the Fourth Proportional to 86,289.54, 129,465.45 and 30,137.91

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Solution

The fourth proportional to 86,289.54, 129,465.45 and 30,137.91 is: 45,217.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,289.54 : 129,465.45 = 30,137.91 : x
  2. Step 2: Convert to fraction form
    86,289.54/129,465.45 = 30,137.91/x
  3. Step 3: Cross multiply
    86,289.54x = 129,465.45 × 30,137.91
  4. Step 4: Simplify right side
    86,289.54x = 3,901,818,080.21
  5. Step 5: Solve for x
    x = 3,901,818,080.21/86,289.54
  6. Step 6: Final answer
    x = 45,217.74

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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.