Home / 85,461.06-128,152.60-35,511.32

Finding the Fourth Proportional to 85,461.06, 128,152.60 and 35,511.32

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Solution

The fourth proportional to 85,461.06, 128,152.60 and 35,511.32 is: 53,250.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,461.06 : 128,152.60 = 35,511.32 : x
  2. Step 2: Convert to fraction form
    85,461.06/128,152.60 = 35,511.32/x
  3. Step 3: Cross multiply
    85,461.06x = 128,152.60 × 35,511.32
  4. Step 4: Simplify right side
    85,461.06x = 4,550,867,987.43
  5. Step 5: Solve for x
    x = 4,550,867,987.43/85,461.06
  6. Step 6: Final answer
    x = 53,250.78

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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.