Home / 72,116.64-99,512.16-40,284.48

Finding the Fourth Proportional to 72,116.64, 99,512.16 and 40,284.48

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Solution

The fourth proportional to 72,116.64, 99,512.16 and 40,284.48 is: 55,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,116.64 : 99,512.16 = 40,284.48 : x
  2. Step 2: Convert to fraction form
    72,116.64/99,512.16 = 40,284.48/x
  3. Step 3: Cross multiply
    72,116.64x = 99,512.16 × 40,284.48
  4. Step 4: Simplify right side
    72,116.64x = 4,008,795,619.28
  5. Step 5: Solve for x
    x = 4,008,795,619.28/72,116.64
  6. Step 6: Final answer
    x = 55,587.66

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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.