Home / 86,300.84-129,448.19-30,140.73

Finding the Fourth Proportional to 86,300.84, 129,448.19 and 30,140.73

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Solution

The fourth proportional to 86,300.84, 129,448.19 and 30,140.73 is: 45,210.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,300.84 : 129,448.19 = 30,140.73 : x
  2. Step 2: Convert to fraction form
    86,300.84/129,448.19 = 30,140.73/x
  3. Step 3: Cross multiply
    86,300.84x = 129,448.19 × 30,140.73
  4. Step 4: Simplify right side
    86,300.84x = 3,901,663,256.05
  5. Step 5: Solve for x
    x = 3,901,663,256.05/86,300.84
  6. Step 6: Final answer
    x = 45,210.03

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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.