Home / 86,941.36-120,032.04-81,580.24

Finding the Fourth Proportional to 86,941.36, 120,032.04 and 81,580.24

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Solution

The fourth proportional to 86,941.36, 120,032.04 and 81,580.24 is: 112,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,941.36 : 120,032.04 = 81,580.24 : x
  2. Step 2: Convert to fraction form
    86,941.36/120,032.04 = 81,580.24/x
  3. Step 3: Cross multiply
    86,941.36x = 120,032.04 × 81,580.24
  4. Step 4: Simplify right side
    86,941.36x = 9,792,242,630.89
  5. Step 5: Solve for x
    x = 9,792,242,630.89/86,941.36
  6. Step 6: Final answer
    x = 112,630.43

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1.5x scale

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.