Home / 42,126.42-63,189.63-28,938.81

Finding the Fourth Proportional to 42,126.42, 63,189.63 and 28,938.81

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Solution

The fourth proportional to 42,126.42, 63,189.63 and 28,938.81 is: 43,408.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,126.42 : 63,189.63 = 28,938.81 : x
  2. Step 2: Convert to fraction form
    42,126.42/63,189.63 = 28,938.81/x
  3. Step 3: Cross multiply
    42,126.42x = 63,189.63 × 28,938.81
  4. Step 4: Simplify right side
    42,126.42x = 1,828,632,696.54
  5. Step 5: Solve for x
    x = 1,828,632,696.54/42,126.42
  6. Step 6: Final answer
    x = 43,408.22

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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.