Home / 90,070.26-135,100.50-45,695.86

Finding the Fourth Proportional to 90,070.26, 135,100.50 and 45,695.86

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Solution

The fourth proportional to 90,070.26, 135,100.50 and 45,695.86 is: 68,541.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,070.26 : 135,100.50 = 45,695.86 : x
  2. Step 2: Convert to fraction form
    90,070.26/135,100.50 = 45,695.86/x
  3. Step 3: Cross multiply
    90,070.26x = 135,100.50 × 45,695.86
  4. Step 4: Simplify right side
    90,070.26x = 6,173,533,533.93
  5. Step 5: Solve for x
    x = 6,173,533,533.93/90,070.26
  6. Step 6: Final answer
    x = 68,541.31

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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.