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Finding the Fourth Proportional to 90,656.96, 136,012.48 and 43,307.52

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Solution

The fourth proportional to 90,656.96, 136,012.48 and 43,307.52 is: 64,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,656.96 : 136,012.48 = 43,307.52 : x
  2. Step 2: Convert to fraction form
    90,656.96/136,012.48 = 43,307.52/x
  3. Step 3: Cross multiply
    90,656.96x = 136,012.48 × 43,307.52
  4. Step 4: Simplify right side
    90,656.96x = 5,890,363,197.85
  5. Step 5: Solve for x
    x = 5,890,363,197.85/90,656.96
  6. Step 6: Final answer
    x = 64,974.20

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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.