Home / 42,759.08-64,139.58-14,678.92

Finding the Fourth Proportional to 42,759.08, 64,139.58 and 14,678.92

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Solution

The fourth proportional to 42,759.08, 64,139.58 and 14,678.92 is: 22,018.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,759.08 : 64,139.58 = 14,678.92 : x
  2. Step 2: Convert to fraction form
    42,759.08/64,139.58 = 14,678.92/x
  3. Step 3: Cross multiply
    42,759.08x = 64,139.58 × 14,678.92
  4. Step 4: Simplify right side
    42,759.08x = 941,499,763.65
  5. Step 5: Solve for x
    x = 941,499,763.65/42,759.08
  6. Step 6: Final answer
    x = 22,018.71

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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.