Home / 81,702.57-112,732.05-47,695.62

Finding the Fourth Proportional to 81,702.57, 112,732.05 and 47,695.62

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Solution

The fourth proportional to 81,702.57, 112,732.05 and 47,695.62 is: 65,809.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,702.57 : 112,732.05 = 47,695.62 : x
  2. Step 2: Convert to fraction form
    81,702.57/112,732.05 = 47,695.62/x
  3. Step 3: Cross multiply
    81,702.57x = 112,732.05 × 47,695.62
  4. Step 4: Simplify right side
    81,702.57x = 5,376,824,970.81
  5. Step 5: Solve for x
    x = 5,376,824,970.81/81,702.57
  6. Step 6: Final answer
    x = 65,809.74

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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.