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Finding the Fourth Proportional to 84,746.70, 127,071.88 and 65,505.66

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Solution

The fourth proportional to 84,746.70, 127,071.88 and 65,505.66 is: 98,221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,746.70 : 127,071.88 = 65,505.66 : x
  2. Step 2: Convert to fraction form
    84,746.70/127,071.88 = 65,505.66/x
  3. Step 3: Cross multiply
    84,746.70x = 127,071.88 × 65,505.66
  4. Step 4: Simplify right side
    84,746.70x = 8,323,927,366.84
  5. Step 5: Solve for x
    x = 8,323,927,366.84/84,746.70
  6. Step 6: Final answer
    x = 98,221.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.