Home / 66,180.35-99,271.54-21,210.16

Finding the Fourth Proportional to 66,180.35, 99,271.54 and 21,210.16

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Solution

The fourth proportional to 66,180.35, 99,271.54 and 21,210.16 is: 31,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,180.35 : 99,271.54 = 21,210.16 : x
  2. Step 2: Convert to fraction form
    66,180.35/99,271.54 = 21,210.16/x
  3. Step 3: Cross multiply
    66,180.35x = 99,271.54 × 21,210.16
  4. Step 4: Simplify right side
    66,180.35x = 2,105,565,246.85
  5. Step 5: Solve for x
    x = 2,105,565,246.85/66,180.35
  6. Step 6: Final answer
    x = 31,815.57

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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.