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Finding the Fourth Proportional to 81,820.76, 112,926.50 and 47,360.50

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Solution

The fourth proportional to 81,820.76, 112,926.50 and 47,360.50 is: 65,365.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,820.76 : 112,926.50 = 47,360.50 : x
  2. Step 2: Convert to fraction form
    81,820.76/112,926.50 = 47,360.50/x
  3. Step 3: Cross multiply
    81,820.76x = 112,926.50 × 47,360.50
  4. Step 4: Simplify right side
    81,820.76x = 5,348,255,503.25
  5. Step 5: Solve for x
    x = 5,348,255,503.25/81,820.76
  6. Step 6: Final answer
    x = 65,365.51

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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.