Home / 74,175.75-102,263.40-61,381.80

Finding the Fourth Proportional to 74,175.75, 102,263.40 and 61,381.80

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Solution

The fourth proportional to 74,175.75, 102,263.40 and 61,381.80 is: 84,624.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,175.75 : 102,263.40 = 61,381.80 : x
  2. Step 2: Convert to fraction form
    74,175.75/102,263.40 = 61,381.80/x
  3. Step 3: Cross multiply
    74,175.75x = 102,263.40 × 61,381.80
  4. Step 4: Simplify right side
    74,175.75x = 6,277,111,566.12
  5. Step 5: Solve for x
    x = 6,277,111,566.12/74,175.75
  6. Step 6: Final answer
    x = 84,624.85

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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.