Home / 70,436.25-105,629.94-28,303.83

Finding the Fourth Proportional to 70,436.25, 105,629.94 and 28,303.83

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Solution

The fourth proportional to 70,436.25, 105,629.94 and 28,303.83 is: 42,445.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,436.25 : 105,629.94 = 28,303.83 : x
  2. Step 2: Convert to fraction form
    70,436.25/105,629.94 = 28,303.83/x
  3. Step 3: Cross multiply
    70,436.25x = 105,629.94 × 28,303.83
  4. Step 4: Simplify right side
    70,436.25x = 2,989,731,864.67
  5. Step 5: Solve for x
    x = 2,989,731,864.67/70,436.25
  6. Step 6: Final answer
    x = 42,445.93

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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.