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Finding the Fourth Proportional to 81,841.82, 112,972.30 and 53,547.50

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Solution

The fourth proportional to 81,841.82, 112,972.30 and 53,547.50 is: 73,915.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,841.82 : 112,972.30 = 53,547.50 : x
  2. Step 2: Convert to fraction form
    81,841.82/112,972.30 = 53,547.50/x
  3. Step 3: Cross multiply
    81,841.82x = 112,972.30 × 53,547.50
  4. Step 4: Simplify right side
    81,841.82x = 6,049,384,382.81
  5. Step 5: Solve for x
    x = 6,049,384,382.81/81,841.82
  6. Step 6: Final answer
    x = 73,915.57

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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.