Home / 86,928.40-130,402.84-30,756.88

Finding the Fourth Proportional to 86,928.40, 130,402.84 and 30,756.88

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Solution

The fourth proportional to 86,928.40, 130,402.84 and 30,756.88 is: 46,138.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,928.40 : 130,402.84 = 30,756.88 : x
  2. Step 2: Convert to fraction form
    86,928.40/130,402.84 = 30,756.88/x
  3. Step 3: Cross multiply
    86,928.40x = 130,402.84 × 30,756.88
  4. Step 4: Simplify right side
    86,928.40x = 4,010,784,501.54
  5. Step 5: Solve for x
    x = 4,010,784,501.54/86,928.40
  6. Step 6: Final answer
    x = 46,138.94

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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.