Home / 86,838.16-130,291.80-36,929.20

Finding the Fourth Proportional to 86,838.16, 130,291.80 and 36,929.20

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Solution

The fourth proportional to 86,838.16, 130,291.80 and 36,929.20 is: 55,408.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,838.16 : 130,291.80 = 36,929.20 : x
  2. Step 2: Convert to fraction form
    86,838.16/130,291.80 = 36,929.20/x
  3. Step 3: Cross multiply
    86,838.16x = 130,291.80 × 36,929.20
  4. Step 4: Simplify right side
    86,838.16x = 4,811,571,940.56
  5. Step 5: Solve for x
    x = 4,811,571,940.56/86,838.16
  6. Step 6: Final answer
    x = 55,408.50

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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.