Home / 90,128.32-135,211.47-26,953.36

Finding the Fourth Proportional to 90,128.32, 135,211.47 and 26,953.36

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Solution

The fourth proportional to 90,128.32, 135,211.47 and 26,953.36 is: 40,435.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,128.32 : 135,211.47 = 26,953.36 : x
  2. Step 2: Convert to fraction form
    90,128.32/135,211.47 = 26,953.36/x
  3. Step 3: Cross multiply
    90,128.32x = 135,211.47 × 26,953.36
  4. Step 4: Simplify right side
    90,128.32x = 3,644,403,427.04
  5. Step 5: Solve for x
    x = 3,644,403,427.04/90,128.32
  6. Step 6: Final answer
    x = 40,435.72

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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.