Home / 86,632.84-129,935.01-30,459.74

Finding the Fourth Proportional to 86,632.84, 129,935.01 and 30,459.74

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Solution

The fourth proportional to 86,632.84, 129,935.01 and 30,459.74 is: 45,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,632.84 : 129,935.01 = 30,459.74 : x
  2. Step 2: Convert to fraction form
    86,632.84/129,935.01 = 30,459.74/x
  3. Step 3: Cross multiply
    86,632.84x = 129,935.01 × 30,459.74
  4. Step 4: Simplify right side
    86,632.84x = 3,957,786,621.50
  5. Step 5: Solve for x
    x = 3,957,786,621.50/86,632.84
  6. Step 6: Final answer
    x = 45,684.60

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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.