Home / 99,722.81-149,583.06-28,647.18

Finding the Fourth Proportional to 99,722.81, 149,583.06 and 28,647.18

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Solution

The fourth proportional to 99,722.81, 149,583.06 and 28,647.18 is: 42,970.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,722.81 : 149,583.06 = 28,647.18 : x
  2. Step 2: Convert to fraction form
    99,722.81/149,583.06 = 28,647.18/x
  3. Step 3: Cross multiply
    99,722.81x = 149,583.06 × 28,647.18
  4. Step 4: Simplify right side
    99,722.81x = 4,285,133,405.71
  5. Step 5: Solve for x
    x = 4,285,133,405.71/99,722.81
  6. Step 6: Final answer
    x = 42,970.45

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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.