Home / 42,758.94-64,152.36-20,574.12

Finding the Fourth Proportional to 42,758.94, 64,152.36 and 20,574.12

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Solution

The fourth proportional to 42,758.94, 64,152.36 and 20,574.12 is: 30,867.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,758.94 : 64,152.36 = 20,574.12 : x
  2. Step 2: Convert to fraction form
    42,758.94/64,152.36 = 20,574.12/x
  3. Step 3: Cross multiply
    42,758.94x = 64,152.36 × 20,574.12
  4. Step 4: Simplify right side
    42,758.94x = 1,319,878,352.92
  5. Step 5: Solve for x
    x = 1,319,878,352.92/42,758.94
  6. Step 6: Final answer
    x = 30,867.89

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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.