Home / 81,718.20-112,741.74-53,440.02

Finding the Fourth Proportional to 81,718.20, 112,741.74 and 53,440.02

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Solution

The fourth proportional to 81,718.20, 112,741.74 and 53,440.02 is: 73,728.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,718.20 : 112,741.74 = 53,440.02 : x
  2. Step 2: Convert to fraction form
    81,718.20/112,741.74 = 53,440.02/x
  3. Step 3: Cross multiply
    81,718.20x = 112,741.74 × 53,440.02
  4. Step 4: Simplify right side
    81,718.20x = 6,024,920,840.43
  5. Step 5: Solve for x
    x = 6,024,920,840.43/81,718.20
  6. Step 6: Final answer
    x = 73,728.02

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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.