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Finding the Fourth Proportional to 30,672, 42,310.04 and 19,322.01

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Solution

The fourth proportional to 30,672, 42,310.04 and 19,322.01 is: 26,653.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672 : 42,310.04 = 19,322.01 : x
  2. Step 2: Convert to fraction form
    30,672/42,310.04 = 19,322.01/x
  3. Step 3: Cross multiply
    30,672x = 42,310.04 × 19,322.01
  4. Step 4: Simplify right side
    30,672x = 817,514,919.37
  5. Step 5: Solve for x
    x = 817,514,919.37/30,672
  6. Step 6: Final answer
    x = 26,653.46

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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.