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Finding the Fourth Proportional to 85,706.51, 118,260.88 and 53,852.72

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Solution

The fourth proportional to 85,706.51, 118,260.88 and 53,852.72 is: 74,307.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,706.51 : 118,260.88 = 53,852.72 : x
  2. Step 2: Convert to fraction form
    85,706.51/118,260.88 = 53,852.72/x
  3. Step 3: Cross multiply
    85,706.51x = 118,260.88 × 53,852.72
  4. Step 4: Simplify right side
    85,706.51x = 6,368,669,331.66
  5. Step 5: Solve for x
    x = 6,368,669,331.66/85,706.51
  6. Step 6: Final answer
    x = 74,307.89

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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.