Home / 81,657.95-122,504.40-28,351.59

Finding the Fourth Proportional to 81,657.95, 122,504.40 and 28,351.59

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Solution

The fourth proportional to 81,657.95, 122,504.40 and 28,351.59 is: 42,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657.95 : 122,504.40 = 28,351.59 : x
  2. Step 2: Convert to fraction form
    81,657.95/122,504.40 = 28,351.59/x
  3. Step 3: Cross multiply
    81,657.95x = 122,504.40 × 28,351.59
  4. Step 4: Simplify right side
    81,657.95x = 3,473,194,062.60
  5. Step 5: Solve for x
    x = 3,473,194,062.60/81,657.95
  6. Step 6: Final answer
    x = 42,533.45

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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.