Home / 81,285.63-112,212.52-61,150.18

Finding the Fourth Proportional to 81,285.63, 112,212.52 and 61,150.18

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Solution

The fourth proportional to 81,285.63, 112,212.52 and 61,150.18 is: 84,416.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.63 : 112,212.52 = 61,150.18 : x
  2. Step 2: Convert to fraction form
    81,285.63/112,212.52 = 61,150.18/x
  3. Step 3: Cross multiply
    81,285.63x = 112,212.52 × 61,150.18
  4. Step 4: Simplify right side
    81,285.63x = 6,861,815,796.25
  5. Step 5: Solve for x
    x = 6,861,815,796.25/81,285.63
  6. Step 6: Final answer
    x = 84,416.10

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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.