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Finding the Fourth Proportional to 84,792.80, 117,005.64 and 47,063

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Solution

The fourth proportional to 84,792.80, 117,005.64 and 47,063 is: 64,942.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,792.80 : 117,005.64 = 47,063 : x
  2. Step 2: Convert to fraction form
    84,792.80/117,005.64 = 47,063/x
  3. Step 3: Cross multiply
    84,792.80x = 117,005.64 × 47,063
  4. Step 4: Simplify right side
    84,792.80x = 5,506,636,435.32
  5. Step 5: Solve for x
    x = 5,506,636,435.32/84,792.80
  6. Step 6: Final answer
    x = 64,942.26

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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.