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Finding the Fourth Proportional to 65,070.09, 97,603.80 and 20,696.94

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Solution

The fourth proportional to 65,070.09, 97,603.80 and 20,696.94 is: 31,044.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,070.09 : 97,603.80 = 20,696.94 : x
  2. Step 2: Convert to fraction form
    65,070.09/97,603.80 = 20,696.94/x
  3. Step 3: Cross multiply
    65,070.09x = 97,603.80 × 20,696.94
  4. Step 4: Simplify right side
    65,070.09x = 2,020,099,992.37
  5. Step 5: Solve for x
    x = 2,020,099,992.37/65,070.09
  6. Step 6: Final answer
    x = 31,044.99

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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.