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Finding the Fourth Proportional to 81,811.60, 112,894.12 and 46,006.80

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Solution

The fourth proportional to 81,811.60, 112,894.12 and 46,006.80 is: 63,486.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,811.60 : 112,894.12 = 46,006.80 : x
  2. Step 2: Convert to fraction form
    81,811.60/112,894.12 = 46,006.80/x
  3. Step 3: Cross multiply
    81,811.60x = 112,894.12 × 46,006.80
  4. Step 4: Simplify right side
    81,811.60x = 5,193,897,200.02
  5. Step 5: Solve for x
    x = 5,193,897,200.02/81,811.60
  6. Step 6: Final answer
    x = 63,486.07

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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.