Home / 86,720.10-130,154.22-61,821.06

Finding the Fourth Proportional to 86,720.10, 130,154.22 and 61,821.06

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Solution

The fourth proportional to 86,720.10, 130,154.22 and 61,821.06 is: 92,784.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.10 : 130,154.22 = 61,821.06 : x
  2. Step 2: Convert to fraction form
    86,720.10/130,154.22 = 61,821.06/x
  3. Step 3: Cross multiply
    86,720.10x = 130,154.22 × 61,821.06
  4. Step 4: Simplify right side
    86,720.10x = 8,046,271,843.87
  5. Step 5: Solve for x
    x = 8,046,271,843.87/86,720.10
  6. Step 6: Final answer
    x = 92,784.39

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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.