Home / 77,312.12-106,687.74-43,778.20

Finding the Fourth Proportional to 77,312.12, 106,687.74 and 43,778.20

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Solution

The fourth proportional to 77,312.12, 106,687.74 and 43,778.20 is: 60,412.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,312.12 : 106,687.74 = 43,778.20 : x
  2. Step 2: Convert to fraction form
    77,312.12/106,687.74 = 43,778.20/x
  3. Step 3: Cross multiply
    77,312.12x = 106,687.74 × 43,778.20
  4. Step 4: Simplify right side
    77,312.12x = 4,670,597,219.27
  5. Step 5: Solve for x
    x = 4,670,597,219.27/77,312.12
  6. Step 6: Final answer
    x = 60,412.23

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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.