Home / 90,955.48-136,426.56-28,643.80

Finding the Fourth Proportional to 90,955.48, 136,426.56 and 28,643.80

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Solution

The fourth proportional to 90,955.48, 136,426.56 and 28,643.80 is: 42,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,955.48 : 136,426.56 = 28,643.80 : x
  2. Step 2: Convert to fraction form
    90,955.48/136,426.56 = 28,643.80/x
  3. Step 3: Cross multiply
    90,955.48x = 136,426.56 × 28,643.80
  4. Step 4: Simplify right side
    90,955.48x = 3,907,775,099.33
  5. Step 5: Solve for x
    x = 3,907,775,099.33/90,955.48
  6. Step 6: Final answer
    x = 42,963.60

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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.