Home / 75,090.81-103,636.94-42,825.49

Finding the Fourth Proportional to 75,090.81, 103,636.94 and 42,825.49

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Solution

The fourth proportional to 75,090.81, 103,636.94 and 42,825.49 is: 59,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,090.81 : 103,636.94 = 42,825.49 : x
  2. Step 2: Convert to fraction form
    75,090.81/103,636.94 = 42,825.49/x
  3. Step 3: Cross multiply
    75,090.81x = 103,636.94 × 42,825.49
  4. Step 4: Simplify right side
    75,090.81x = 4,438,302,737.60
  5. Step 5: Solve for x
    x = 4,438,302,737.60/75,090.81
  6. Step 6: Final answer
    x = 59,105.80

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1.5x scale

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.