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Finding the Fourth Proportional to 66,862.14, 99,703.92 and 66,262.54

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Solution

The fourth proportional to 66,862.14, 99,703.92 and 66,262.54 is: 98,809.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,862.14 : 99,703.92 = 66,262.54 : x
  2. Step 2: Convert to fraction form
    66,862.14/99,703.92 = 66,262.54/x
  3. Step 3: Cross multiply
    66,862.14x = 99,703.92 × 66,262.54
  4. Step 4: Simplify right side
    66,862.14x = 6,606,634,987.16
  5. Step 5: Solve for x
    x = 6,606,634,987.16/66,862.14
  6. Step 6: Final answer
    x = 98,809.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.