Home / 46,720.64-70,079.88-13,440.80

Finding the Fourth Proportional to 46,720.64, 70,079.88 and 13,440.80

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Solution

The fourth proportional to 46,720.64, 70,079.88 and 13,440.80 is: 20,160.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,720.64 : 70,079.88 = 13,440.80 : x
  2. Step 2: Convert to fraction form
    46,720.64/70,079.88 = 13,440.80/x
  3. Step 3: Cross multiply
    46,720.64x = 70,079.88 × 13,440.80
  4. Step 4: Simplify right side
    46,720.64x = 941,929,651.10
  5. Step 5: Solve for x
    x = 941,929,651.10/46,720.64
  6. Step 6: Final answer
    x = 20,160.89

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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.