Home / 79,210.32-109,407.35-64,120.02

Finding the Fourth Proportional to 79,210.32, 109,407.35 and 64,120.02

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Solution

The fourth proportional to 79,210.32, 109,407.35 and 64,120.02 is: 88,564.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,210.32 : 109,407.35 = 64,120.02 : x
  2. Step 2: Convert to fraction form
    79,210.32/109,407.35 = 64,120.02/x
  3. Step 3: Cross multiply
    79,210.32x = 109,407.35 × 64,120.02
  4. Step 4: Simplify right side
    79,210.32x = 7,015,201,470.15
  5. Step 5: Solve for x
    x = 7,015,201,470.15/79,210.32
  6. Step 6: Final answer
    x = 88,564.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.