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Finding the Fourth Proportional to 69,090.40, 103,696.35 and 40,975.30

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Solution

The fourth proportional to 69,090.40, 103,696.35 and 40,975.30 is: 61,498.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,090.40 : 103,696.35 = 40,975.30 : x
  2. Step 2: Convert to fraction form
    69,090.40/103,696.35 = 40,975.30/x
  3. Step 3: Cross multiply
    69,090.40x = 103,696.35 × 40,975.30
  4. Step 4: Simplify right side
    69,090.40x = 4,248,989,050.16
  5. Step 5: Solve for x
    x = 4,248,989,050.16/69,090.40
  6. Step 6: Final answer
    x = 61,498.98

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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.