Home / 42,739.05-64,080.75-14,272.50

Finding the Fourth Proportional to 42,739.05, 64,080.75 and 14,272.50

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Solution

The fourth proportional to 42,739.05, 64,080.75 and 14,272.50 is: 21,399.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,739.05 : 64,080.75 = 14,272.50 : x
  2. Step 2: Convert to fraction form
    42,739.05/64,080.75 = 14,272.50/x
  3. Step 3: Cross multiply
    42,739.05x = 64,080.75 × 14,272.50
  4. Step 4: Simplify right side
    42,739.05x = 914,592,504.38
  5. Step 5: Solve for x
    x = 914,592,504.38/42,739.05
  6. Step 6: Final answer
    x = 21,399.46

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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.