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Finding the Fourth Proportional to 81,812.60, 112,895.50 and 46,007.80

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Solution

The fourth proportional to 81,812.60, 112,895.50 and 46,007.80 is: 63,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,812.60 : 112,895.50 = 46,007.80 : x
  2. Step 2: Convert to fraction form
    81,812.60/112,895.50 = 46,007.80/x
  3. Step 3: Cross multiply
    81,812.60x = 112,895.50 × 46,007.80
  4. Step 4: Simplify right side
    81,812.60x = 5,194,073,584.90
  5. Step 5: Solve for x
    x = 5,194,073,584.90/81,812.60
  6. Step 6: Final answer
    x = 63,487.45

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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.