Home / 72,430.88-108,667.28-30,289.22

Finding the Fourth Proportional to 72,430.88, 108,667.28 and 30,289.22

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Solution

The fourth proportional to 72,430.88, 108,667.28 and 30,289.22 is: 45,442.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,430.88 : 108,667.28 = 30,289.22 : x
  2. Step 2: Convert to fraction form
    72,430.88/108,667.28 = 30,289.22/x
  3. Step 3: Cross multiply
    72,430.88x = 108,667.28 × 30,289.22
  4. Step 4: Simplify right side
    72,430.88x = 3,291,446,683.11
  5. Step 5: Solve for x
    x = 3,291,446,683.11/72,430.88
  6. Step 6: Final answer
    x = 45,442.59

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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.