Home / 53,920.40-80,880.60-51,645.20

Finding the Fourth Proportional to 53,920.40, 80,880.60 and 51,645.20

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Solution

The fourth proportional to 53,920.40, 80,880.60 and 51,645.20 is: 77,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,920.40 : 80,880.60 = 51,645.20 : x
  2. Step 2: Convert to fraction form
    53,920.40/80,880.60 = 51,645.20/x
  3. Step 3: Cross multiply
    53,920.40x = 80,880.60 × 51,645.20
  4. Step 4: Simplify right side
    53,920.40x = 4,177,094,763.12
  5. Step 5: Solve for x
    x = 4,177,094,763.12/53,920.40
  6. Step 6: Final answer
    x = 77,467.80

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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.