Home / 90,951.48-136,420.56-28,639.80

Finding the Fourth Proportional to 90,951.48, 136,420.56 and 28,639.80

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Solution

The fourth proportional to 90,951.48, 136,420.56 and 28,639.80 is: 42,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,951.48 : 136,420.56 = 28,639.80 : x
  2. Step 2: Convert to fraction form
    90,951.48/136,420.56 = 28,639.80/x
  3. Step 3: Cross multiply
    90,951.48x = 136,420.56 × 28,639.80
  4. Step 4: Simplify right side
    90,951.48x = 3,907,057,554.29
  5. Step 5: Solve for x
    x = 3,907,057,554.29/90,951.48
  6. Step 6: Final answer
    x = 42,957.60

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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.