Home / 66,142.16-91,311.72-51,001.64

Finding the Fourth Proportional to 66,142.16, 91,311.72 and 51,001.64

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Solution

The fourth proportional to 66,142.16, 91,311.72 and 51,001.64 is: 70,409.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,142.16 : 91,311.72 = 51,001.64 : x
  2. Step 2: Convert to fraction form
    66,142.16/91,311.72 = 51,001.64/x
  3. Step 3: Cross multiply
    66,142.16x = 91,311.72 × 51,001.64
  4. Step 4: Simplify right side
    66,142.16x = 4,657,047,471.22
  5. Step 5: Solve for x
    x = 4,657,047,471.22/66,142.16
  6. Step 6: Final answer
    x = 70,409.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.