Home / 81,433.08-112,384.20-45,631.08

Finding the Fourth Proportional to 81,433.08, 112,384.20 and 45,631.08

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Solution

The fourth proportional to 81,433.08, 112,384.20 and 45,631.08 is: 62,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,433.08 : 112,384.20 = 45,631.08 : x
  2. Step 2: Convert to fraction form
    81,433.08/112,384.20 = 45,631.08/x
  3. Step 3: Cross multiply
    81,433.08x = 112,384.20 × 45,631.08
  4. Step 4: Simplify right side
    81,433.08x = 5,128,212,420.94
  5. Step 5: Solve for x
    x = 5,128,212,420.94/81,433.08
  6. Step 6: Final answer
    x = 62,974.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.