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Finding the Fourth Proportional to 81,816.16, 112,916.32 and 46,007.68

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Solution

The fourth proportional to 81,816.16, 112,916.32 and 46,007.68 is: 63,496.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,816.16 : 112,916.32 = 46,007.68 : x
  2. Step 2: Convert to fraction form
    81,816.16/112,916.32 = 46,007.68/x
  3. Step 3: Cross multiply
    81,816.16x = 112,916.32 × 46,007.68
  4. Step 4: Simplify right side
    81,816.16x = 5,195,017,917.34
  5. Step 5: Solve for x
    x = 5,195,017,917.34/81,816.16
  6. Step 6: Final answer
    x = 63,496.23

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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.