Home / 86,242.32-129,406.14-38,890.26

Finding the Fourth Proportional to 86,242.32, 129,406.14 and 38,890.26

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Solution

The fourth proportional to 86,242.32, 129,406.14 and 38,890.26 is: 58,354.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,242.32 : 129,406.14 = 38,890.26 : x
  2. Step 2: Convert to fraction form
    86,242.32/129,406.14 = 38,890.26/x
  3. Step 3: Cross multiply
    86,242.32x = 129,406.14 × 38,890.26
  4. Step 4: Simplify right side
    86,242.32x = 5,032,638,430.20
  5. Step 5: Solve for x
    x = 5,032,638,430.20/86,242.32
  6. Step 6: Final answer
    x = 58,354.63

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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.