Home / 90,437.63-135,675.89-30,472.06

Finding the Fourth Proportional to 90,437.63, 135,675.89 and 30,472.06

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Solution

The fourth proportional to 90,437.63, 135,675.89 and 30,472.06 is: 45,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,437.63 : 135,675.89 = 30,472.06 : x
  2. Step 2: Convert to fraction form
    90,437.63/135,675.89 = 30,472.06/x
  3. Step 3: Cross multiply
    90,437.63x = 135,675.89 × 30,472.06
  4. Step 4: Simplify right side
    90,437.63x = 4,134,323,860.63
  5. Step 5: Solve for x
    x = 4,134,323,860.63/90,437.63
  6. Step 6: Final answer
    x = 45,714.64

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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.