Home / 90,986.16-136,495.44-31,011.30

Finding the Fourth Proportional to 90,986.16, 136,495.44 and 31,011.30

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Solution

The fourth proportional to 90,986.16, 136,495.44 and 31,011.30 is: 46,522.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,986.16 : 136,495.44 = 31,011.30 : x
  2. Step 2: Convert to fraction form
    90,986.16/136,495.44 = 31,011.30/x
  3. Step 3: Cross multiply
    90,986.16x = 136,495.44 × 31,011.30
  4. Step 4: Simplify right side
    90,986.16x = 4,232,901,038.47
  5. Step 5: Solve for x
    x = 4,232,901,038.47/90,986.16
  6. Step 6: Final answer
    x = 46,522.47

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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.