Home / 103,689.21-155,554.16-47,530.70

Finding the Fourth Proportional to 103,689.21, 155,554.16 and 47,530.70

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Solution

The fourth proportional to 103,689.21, 155,554.16 and 47,530.70 is: 71,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.21 : 155,554.16 = 47,530.70 : x
  2. Step 2: Convert to fraction form
    103,689.21/155,554.16 = 47,530.70/x
  3. Step 3: Cross multiply
    103,689.21x = 155,554.16 × 47,530.70
  4. Step 4: Simplify right side
    103,689.21x = 7,393,598,112.71
  5. Step 5: Solve for x
    x = 7,393,598,112.71/103,689.21
  6. Step 6: Final answer
    x = 71,305.38

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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.