Home / 66,630.86-99,945-27,178.58

Finding the Fourth Proportional to 66,630.86, 99,945 and 27,178.58

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Solution

The fourth proportional to 66,630.86, 99,945 and 27,178.58 is: 40,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,630.86 : 99,945 = 27,178.58 : x
  2. Step 2: Convert to fraction form
    66,630.86/99,945 = 27,178.58/x
  3. Step 3: Cross multiply
    66,630.86x = 99,945 × 27,178.58
  4. Step 4: Simplify right side
    66,630.86x = 2,716,363,178.10
  5. Step 5: Solve for x
    x = 2,716,363,178.10/66,630.86
  6. Step 6: Final answer
    x = 40,767.34

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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.