Home / 90,488.30-135,714.64-30,510.94

Finding the Fourth Proportional to 90,488.30, 135,714.64 and 30,510.94

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Solution

The fourth proportional to 90,488.30, 135,714.64 and 30,510.94 is: 45,760.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,488.30 : 135,714.64 = 30,510.94 : x
  2. Step 2: Convert to fraction form
    90,488.30/135,714.64 = 30,510.94/x
  3. Step 3: Cross multiply
    90,488.30x = 135,714.64 × 30,510.94
  4. Step 4: Simplify right side
    90,488.30x = 4,140,781,238.16
  5. Step 5: Solve for x
    x = 4,140,781,238.16/90,488.30
  6. Step 6: Final answer
    x = 45,760.40

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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.