Home / 86,460.60-129,749.33-30,301.28

Finding the Fourth Proportional to 86,460.60, 129,749.33 and 30,301.28

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Solution

The fourth proportional to 86,460.60, 129,749.33 and 30,301.28 is: 45,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,460.60 : 129,749.33 = 30,301.28 : x
  2. Step 2: Convert to fraction form
    86,460.60/129,749.33 = 30,301.28/x
  3. Step 3: Cross multiply
    86,460.60x = 129,749.33 × 30,301.28
  4. Step 4: Simplify right side
    86,460.60x = 3,931,570,778.14
  5. Step 5: Solve for x
    x = 3,931,570,778.14/86,460.60
  6. Step 6: Final answer
    x = 45,472.40

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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.