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Finding the Fourth Proportional to 52,854.32, 72,940.80 and 28,981.04

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Solution

The fourth proportional to 52,854.32, 72,940.80 and 28,981.04 is: 39,994.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,854.32 : 72,940.80 = 28,981.04 : x
  2. Step 2: Convert to fraction form
    52,854.32/72,940.80 = 28,981.04/x
  3. Step 3: Cross multiply
    52,854.32x = 72,940.80 × 28,981.04
  4. Step 4: Simplify right side
    52,854.32x = 2,113,900,242.43
  5. Step 5: Solve for x
    x = 2,113,900,242.43/52,854.32
  6. Step 6: Final answer
    x = 39,994.84

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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.