Home / 52,271.52-78,406.80-21,106.32

Finding the Fourth Proportional to 52,271.52, 78,406.80 and 21,106.32

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Solution

The fourth proportional to 52,271.52, 78,406.80 and 21,106.32 is: 31,659.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,271.52 : 78,406.80 = 21,106.32 : x
  2. Step 2: Convert to fraction form
    52,271.52/78,406.80 = 21,106.32/x
  3. Step 3: Cross multiply
    52,271.52x = 78,406.80 × 21,106.32
  4. Step 4: Simplify right side
    52,271.52x = 1,654,879,010.98
  5. Step 5: Solve for x
    x = 1,654,879,010.98/52,271.52
  6. Step 6: Final answer
    x = 31,659.29

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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.