Home / 82,720.64-124,152.60-43,305.32

Finding the Fourth Proportional to 82,720.64, 124,152.60 and 43,305.32

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Solution

The fourth proportional to 82,720.64, 124,152.60 and 43,305.32 is: 64,995.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,720.64 : 124,152.60 = 43,305.32 : x
  2. Step 2: Convert to fraction form
    82,720.64/124,152.60 = 43,305.32/x
  3. Step 3: Cross multiply
    82,720.64x = 124,152.60 × 43,305.32
  4. Step 4: Simplify right side
    82,720.64x = 5,376,468,071.83
  5. Step 5: Solve for x
    x = 5,376,468,071.83/82,720.64
  6. Step 6: Final answer
    x = 64,995.48

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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.