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Finding the Fourth Proportional to 38,970.32, 53,779.56 and 23,054.36

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Solution

The fourth proportional to 38,970.32, 53,779.56 and 23,054.36 is: 31,815.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,970.32 : 53,779.56 = 23,054.36 : x
  2. Step 2: Convert to fraction form
    38,970.32/53,779.56 = 23,054.36/x
  3. Step 3: Cross multiply
    38,970.32x = 53,779.56 × 23,054.36
  4. Step 4: Simplify right side
    38,970.32x = 1,239,853,336.88
  5. Step 5: Solve for x
    x = 1,239,853,336.88/38,970.32
  6. Step 6: Final answer
    x = 31,815.32

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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.