Home / 85,821.77-118,434.04-47,581.20

Finding the Fourth Proportional to 85,821.77, 118,434.04 and 47,581.20

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Solution

The fourth proportional to 85,821.77, 118,434.04 and 47,581.20 is: 65,662.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,821.77 : 118,434.04 = 47,581.20 : x
  2. Step 2: Convert to fraction form
    85,821.77/118,434.04 = 47,581.20/x
  3. Step 3: Cross multiply
    85,821.77x = 118,434.04 × 47,581.20
  4. Step 4: Simplify right side
    85,821.77x = 5,635,233,625.10
  5. Step 5: Solve for x
    x = 5,635,233,625.10/85,821.77
  6. Step 6: Final answer
    x = 65,662.05

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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.