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Finding the Fourth Proportional to 81,620.96, 112,607.98 and 53,343.04

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Solution

The fourth proportional to 81,620.96, 112,607.98 and 53,343.04 is: 73,594.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,620.96 : 112,607.98 = 53,343.04 : x
  2. Step 2: Convert to fraction form
    81,620.96/112,607.98 = 53,343.04/x
  3. Step 3: Cross multiply
    81,620.96x = 112,607.98 × 53,343.04
  4. Step 4: Simplify right side
    81,620.96x = 6,006,851,981.46
  5. Step 5: Solve for x
    x = 6,006,851,981.46/81,620.96
  6. Step 6: Final answer
    x = 73,594.48

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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.