Home / 72,028.55-99,405.02-40,202.23

Finding the Fourth Proportional to 72,028.55, 99,405.02 and 40,202.23

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Solution

The fourth proportional to 72,028.55, 99,405.02 and 40,202.23 is: 55,482.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,028.55 : 99,405.02 = 40,202.23 : x
  2. Step 2: Convert to fraction form
    72,028.55/99,405.02 = 40,202.23/x
  3. Step 3: Cross multiply
    72,028.55x = 99,405.02 × 40,202.23
  4. Step 4: Simplify right side
    72,028.55x = 3,996,303,477.19
  5. Step 5: Solve for x
    x = 3,996,303,477.19/72,028.55
  6. Step 6: Final answer
    x = 55,482.21

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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.