Home / 86,943.69-130,415.58-47,479.23

Finding the Fourth Proportional to 86,943.69, 130,415.58 and 47,479.23

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Solution

The fourth proportional to 86,943.69, 130,415.58 and 47,479.23 is: 71,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,943.69 : 130,415.58 = 47,479.23 : x
  2. Step 2: Convert to fraction form
    86,943.69/130,415.58 = 47,479.23/x
  3. Step 3: Cross multiply
    86,943.69x = 130,415.58 × 47,479.23
  4. Step 4: Simplify right side
    86,943.69x = 6,192,031,318.40
  5. Step 5: Solve for x
    x = 6,192,031,318.40/86,943.69
  6. Step 6: Final answer
    x = 71,218.87

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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.