Home / 42,758.12-64,054.14-20,587.06

Finding the Fourth Proportional to 42,758.12, 64,054.14 and 20,587.06

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Solution

The fourth proportional to 42,758.12, 64,054.14 and 20,587.06 is: 30,840.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,758.12 : 64,054.14 = 20,587.06 : x
  2. Step 2: Convert to fraction form
    42,758.12/64,054.14 = 20,587.06/x
  3. Step 3: Cross multiply
    42,758.12x = 64,054.14 × 20,587.06
  4. Step 4: Simplify right side
    42,758.12x = 1,318,686,423.43
  5. Step 5: Solve for x
    x = 1,318,686,423.43/42,758.12
  6. Step 6: Final answer
    x = 30,840.61

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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.