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Finding the Fourth Proportional to 69,090.37, 103,096.70 and 61,643.63

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Solution

The fourth proportional to 69,090.37, 103,096.70 and 61,643.63 is: 91,984.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,090.37 : 103,096.70 = 61,643.63 : x
  2. Step 2: Convert to fraction form
    69,090.37/103,096.70 = 61,643.63/x
  3. Step 3: Cross multiply
    69,090.37x = 103,096.70 × 61,643.63
  4. Step 4: Simplify right side
    69,090.37x = 6,355,255,009.71
  5. Step 5: Solve for x
    x = 6,355,255,009.71/69,090.37
  6. Step 6: Final answer
    x = 91,984.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.