Home / 86,985.76-130,498.80-30,822.88

Finding the Fourth Proportional to 86,985.76, 130,498.80 and 30,822.88

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Solution

The fourth proportional to 86,985.76, 130,498.80 and 30,822.88 is: 46,241.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.76 : 130,498.80 = 30,822.88 : x
  2. Step 2: Convert to fraction form
    86,985.76/130,498.80 = 30,822.88/x
  3. Step 3: Cross multiply
    86,985.76x = 130,498.80 × 30,822.88
  4. Step 4: Simplify right side
    86,985.76x = 4,022,348,852.54
  5. Step 5: Solve for x
    x = 4,022,348,852.54/86,985.76
  6. Step 6: Final answer
    x = 46,241.46

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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.