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Finding the Fourth Proportional to 46,991.60, 70,421.44 and 21,972.32

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Solution

The fourth proportional to 46,991.60, 70,421.44 and 21,972.32 is: 32,927.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,991.60 : 70,421.44 = 21,972.32 : x
  2. Step 2: Convert to fraction form
    46,991.60/70,421.44 = 21,972.32/x
  3. Step 3: Cross multiply
    46,991.60x = 70,421.44 × 21,972.32
  4. Step 4: Simplify right side
    46,991.60x = 1,547,322,414.54
  5. Step 5: Solve for x
    x = 1,547,322,414.54/46,991.60
  6. Step 6: Final answer
    x = 32,927.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.