Home / 47,608.40-65,666.76-28,721.36

Finding the Fourth Proportional to 47,608.40, 65,666.76 and 28,721.36

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Solution

The fourth proportional to 47,608.40, 65,666.76 and 28,721.36 is: 39,615.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,608.40 : 65,666.76 = 28,721.36 : x
  2. Step 2: Convert to fraction form
    47,608.40/65,666.76 = 28,721.36/x
  3. Step 3: Cross multiply
    47,608.40x = 65,666.76 × 28,721.36
  4. Step 4: Simplify right side
    47,608.40x = 1,886,038,653.99
  5. Step 5: Solve for x
    x = 1,886,038,653.99/47,608.40
  6. Step 6: Final answer
    x = 39,615.67

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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.