Home / 78,343.04-108,130.44-48,144.20

Finding the Fourth Proportional to 78,343.04, 108,130.44 and 48,144.20

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Solution

The fourth proportional to 78,343.04, 108,130.44 and 48,144.20 is: 66,449.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,343.04 : 108,130.44 = 48,144.20 : x
  2. Step 2: Convert to fraction form
    78,343.04/108,130.44 = 48,144.20/x
  3. Step 3: Cross multiply
    78,343.04x = 108,130.44 × 48,144.20
  4. Step 4: Simplify right side
    78,343.04x = 5,205,853,529.45
  5. Step 5: Solve for x
    x = 5,205,853,529.45/78,343.04
  6. Step 6: Final answer
    x = 66,449.47

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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.