Home / 42,763.04-64,145.64-20,268.44

Finding the Fourth Proportional to 42,763.04, 64,145.64 and 20,268.44

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Solution

The fourth proportional to 42,763.04, 64,145.64 and 20,268.44 is: 30,403.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,763.04 : 64,145.64 = 20,268.44 : x
  2. Step 2: Convert to fraction form
    42,763.04/64,145.64 = 20,268.44/x
  3. Step 3: Cross multiply
    42,763.04x = 64,145.64 × 20,268.44
  4. Step 4: Simplify right side
    42,763.04x = 1,300,132,055.60
  5. Step 5: Solve for x
    x = 1,300,132,055.60/42,763.04
  6. Step 6: Final answer
    x = 30,403.17

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1.5x scale

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.