Home / 42,729.05-64,037.79-30,922.58

Finding the Fourth Proportional to 42,729.05, 64,037.79 and 30,922.58

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Solution

The fourth proportional to 42,729.05, 64,037.79 and 30,922.58 is: 46,343.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.05 : 64,037.79 = 30,922.58 : x
  2. Step 2: Convert to fraction form
    42,729.05/64,037.79 = 30,922.58/x
  3. Step 3: Cross multiply
    42,729.05x = 64,037.79 × 30,922.58
  4. Step 4: Simplify right side
    42,729.05x = 1,980,213,364.11
  5. Step 5: Solve for x
    x = 1,980,213,364.11/42,729.05
  6. Step 6: Final answer
    x = 46,343.50

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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.