Home / 85,416.24-128,124.60-50,307.60

Finding the Fourth Proportional to 85,416.24, 128,124.60 and 50,307.60

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Solution

The fourth proportional to 85,416.24, 128,124.60 and 50,307.60 is: 75,461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,416.24 : 128,124.60 = 50,307.60 : x
  2. Step 2: Convert to fraction form
    85,416.24/128,124.60 = 50,307.60/x
  3. Step 3: Cross multiply
    85,416.24x = 128,124.60 × 50,307.60
  4. Step 4: Simplify right side
    85,416.24x = 6,445,641,126.96
  5. Step 5: Solve for x
    x = 6,445,641,126.96/85,416.24
  6. Step 6: Final answer
    x = 75,461.54

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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.