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Finding the Fourth Proportional to 115,603.70, 173,405.55 and 40,808.30

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Solution

The fourth proportional to 115,603.70, 173,405.55 and 40,808.30 is: 61,212.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,603.70 : 173,405.55 = 40,808.30 : x
  2. Step 2: Convert to fraction form
    115,603.70/173,405.55 = 40,808.30/x
  3. Step 3: Cross multiply
    115,603.70x = 173,405.55 × 40,808.30
  4. Step 4: Simplify right side
    115,603.70x = 7,076,385,706.07
  5. Step 5: Solve for x
    x = 7,076,385,706.07/115,603.70
  6. Step 6: Final answer
    x = 61,212.45

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1.5x scale

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.