Home / 86,901.12-130,255.56-56,879.28

Finding the Fourth Proportional to 86,901.12, 130,255.56 and 56,879.28

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Solution

The fourth proportional to 86,901.12, 130,255.56 and 56,879.28 is: 85,256.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,901.12 : 130,255.56 = 56,879.28 : x
  2. Step 2: Convert to fraction form
    86,901.12/130,255.56 = 56,879.28/x
  3. Step 3: Cross multiply
    86,901.12x = 130,255.56 × 56,879.28
  4. Step 4: Simplify right side
    86,901.12x = 7,408,842,468.80
  5. Step 5: Solve for x
    x = 7,408,842,468.80/86,901.12
  6. Step 6: Final answer
    x = 85,256.01

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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.