Home / 77,118.28-106,425.63-43,128.18

Finding the Fourth Proportional to 77,118.28, 106,425.63 and 43,128.18

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Solution

The fourth proportional to 77,118.28, 106,425.63 and 43,128.18 is: 59,518.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,118.28 : 106,425.63 = 43,128.18 : x
  2. Step 2: Convert to fraction form
    77,118.28/106,425.63 = 43,128.18/x
  3. Step 3: Cross multiply
    77,118.28x = 106,425.63 × 43,128.18
  4. Step 4: Simplify right side
    77,118.28x = 4,589,943,727.25
  5. Step 5: Solve for x
    x = 4,589,943,727.25/77,118.28
  6. Step 6: Final answer
    x = 59,518.23

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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.