Home / 86,270.16-129,364.19-30,103.45

Finding the Fourth Proportional to 86,270.16, 129,364.19 and 30,103.45

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Solution

The fourth proportional to 86,270.16, 129,364.19 and 30,103.45 is: 45,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,270.16 : 129,364.19 = 30,103.45 : x
  2. Step 2: Convert to fraction form
    86,270.16/129,364.19 = 30,103.45/x
  3. Step 3: Cross multiply
    86,270.16x = 129,364.19 × 30,103.45
  4. Step 4: Simplify right side
    86,270.16x = 3,894,308,064.42
  5. Step 5: Solve for x
    x = 3,894,308,064.42/86,270.16
  6. Step 6: Final answer
    x = 45,140.84

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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.