Home / 70,620.04-105,946.35-20,703.98

Finding the Fourth Proportional to 70,620.04, 105,946.35 and 20,703.98

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Solution

The fourth proportional to 70,620.04, 105,946.35 and 20,703.98 is: 31,060.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,620.04 : 105,946.35 = 20,703.98 : x
  2. Step 2: Convert to fraction form
    70,620.04/105,946.35 = 20,703.98/x
  3. Step 3: Cross multiply
    70,620.04x = 105,946.35 × 20,703.98
  4. Step 4: Simplify right side
    70,620.04x = 2,193,511,111.47
  5. Step 5: Solve for x
    x = 2,193,511,111.47/70,620.04
  6. Step 6: Final answer
    x = 31,060.75

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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.