Home / 90,649.08-135,926.90-40,686.34

Finding the Fourth Proportional to 90,649.08, 135,926.90 and 40,686.34

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Solution

The fourth proportional to 90,649.08, 135,926.90 and 40,686.34 is: 61,008.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.08 : 135,926.90 = 40,686.34 : x
  2. Step 2: Convert to fraction form
    90,649.08/135,926.90 = 40,686.34/x
  3. Step 3: Cross multiply
    90,649.08x = 135,926.90 × 40,686.34
  4. Step 4: Simplify right side
    90,649.08x = 5,530,368,068.55
  5. Step 5: Solve for x
    x = 5,530,368,068.55/90,649.08
  6. Step 6: Final answer
    x = 61,008.54

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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.