Home / 72,115.21-99,518.99-40,284.11

Finding the Fourth Proportional to 72,115.21, 99,518.99 and 40,284.11

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Solution

The fourth proportional to 72,115.21, 99,518.99 and 40,284.11 is: 55,592.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.21 : 99,518.99 = 40,284.11 : x
  2. Step 2: Convert to fraction form
    72,115.21/99,518.99 = 40,284.11/x
  3. Step 3: Cross multiply
    72,115.21x = 99,518.99 × 40,284.11
  4. Step 4: Simplify right side
    72,115.21x = 4,009,033,940.25
  5. Step 5: Solve for x
    x = 4,009,033,940.25/72,115.21
  6. Step 6: Final answer
    x = 55,592.07

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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.