Home / 42,723.68-64,085.64-19,322.76

Finding the Fourth Proportional to 42,723.68, 64,085.64 and 19,322.76

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Solution

The fourth proportional to 42,723.68, 64,085.64 and 19,322.76 is: 28,984.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,723.68 : 64,085.64 = 19,322.76 : x
  2. Step 2: Convert to fraction form
    42,723.68/64,085.64 = 19,322.76/x
  3. Step 3: Cross multiply
    42,723.68x = 64,085.64 × 19,322.76
  4. Step 4: Simplify right side
    42,723.68x = 1,238,311,441.17
  5. Step 5: Solve for x
    x = 1,238,311,441.17/42,723.68
  6. Step 6: Final answer
    x = 28,984.19

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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.