Home / 42,735.08-64,102.66-11,145.11

Finding the Fourth Proportional to 42,735.08, 64,102.66 and 11,145.11

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Solution

The fourth proportional to 42,735.08, 64,102.66 and 11,145.11 is: 16,717.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,735.08 : 64,102.66 = 11,145.11 : x
  2. Step 2: Convert to fraction form
    42,735.08/64,102.66 = 11,145.11/x
  3. Step 3: Cross multiply
    42,735.08x = 64,102.66 × 11,145.11
  4. Step 4: Simplify right side
    42,735.08x = 714,430,820.75
  5. Step 5: Solve for x
    x = 714,430,820.75/42,735.08
  6. Step 6: Final answer
    x = 16,717.67

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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.