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Finding the Fourth Proportional to 66,488.03, 91,740.93 and 39,633.03

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Solution

The fourth proportional to 66,488.03, 91,740.93 and 39,633.03 is: 54,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,488.03 : 91,740.93 = 39,633.03 : x
  2. Step 2: Convert to fraction form
    66,488.03/91,740.93 = 39,633.03/x
  3. Step 3: Cross multiply
    66,488.03x = 91,740.93 × 39,633.03
  4. Step 4: Simplify right side
    66,488.03x = 3,635,971,030.92
  5. Step 5: Solve for x
    x = 3,635,971,030.92/66,488.03
  6. Step 6: Final answer
    x = 54,686.10

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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.