Home / 86,021.10-118,705.27-47,783.29

Finding the Fourth Proportional to 86,021.10, 118,705.27 and 47,783.29

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Solution

The fourth proportional to 86,021.10, 118,705.27 and 47,783.29 is: 65,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,021.10 : 118,705.27 = 47,783.29 : x
  2. Step 2: Convert to fraction form
    86,021.10/118,705.27 = 47,783.29/x
  3. Step 3: Cross multiply
    86,021.10x = 118,705.27 × 47,783.29
  4. Step 4: Simplify right side
    86,021.10x = 5,672,128,705.13
  5. Step 5: Solve for x
    x = 5,672,128,705.13/86,021.10
  6. Step 6: Final answer
    x = 65,938.81

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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.