Home / 81,701.20-112,718.10-53,423.20

Finding the Fourth Proportional to 81,701.20, 112,718.10 and 53,423.20

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Solution

The fourth proportional to 81,701.20, 112,718.10 and 53,423.20 is: 73,704.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,701.20 : 112,718.10 = 53,423.20 : x
  2. Step 2: Convert to fraction form
    81,701.20/112,718.10 = 53,423.20/x
  3. Step 3: Cross multiply
    81,701.20x = 112,718.10 × 53,423.20
  4. Step 4: Simplify right side
    81,701.20x = 6,021,761,599.92
  5. Step 5: Solve for x
    x = 6,021,761,599.92/81,701.20
  6. Step 6: Final answer
    x = 73,704.69

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1.5x scale

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.