Home / 72,439.23-99,968.73-42,219.68

Finding the Fourth Proportional to 72,439.23, 99,968.73 and 42,219.68

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Solution

The fourth proportional to 72,439.23, 99,968.73 and 42,219.68 is: 58,264.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439.23 : 99,968.73 = 42,219.68 : x
  2. Step 2: Convert to fraction form
    72,439.23/99,968.73 = 42,219.68/x
  3. Step 3: Cross multiply
    72,439.23x = 99,968.73 × 42,219.68
  4. Step 4: Simplify right side
    72,439.23x = 4,220,647,932.25
  5. Step 5: Solve for x
    x = 4,220,647,932.25/72,439.23
  6. Step 6: Final answer
    x = 58,264.67

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1.5x scale

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.