Home / 85,385.40-128,078.04-23,055.84

Finding the Fourth Proportional to 85,385.40, 128,078.04 and 23,055.84

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Solution

The fourth proportional to 85,385.40, 128,078.04 and 23,055.84 is: 34,583.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,385.40 : 128,078.04 = 23,055.84 : x
  2. Step 2: Convert to fraction form
    85,385.40/128,078.04 = 23,055.84/x
  3. Step 3: Cross multiply
    85,385.40x = 128,078.04 × 23,055.84
  4. Step 4: Simplify right side
    85,385.40x = 2,952,946,797.75
  5. Step 5: Solve for x
    x = 2,952,946,797.75/85,385.40
  6. Step 6: Final answer
    x = 34,583.74

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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.