Home / 80,970.36-111,739.26-45,159.45

Finding the Fourth Proportional to 80,970.36, 111,739.26 and 45,159.45

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Solution

The fourth proportional to 80,970.36, 111,739.26 and 45,159.45 is: 62,320.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,970.36 : 111,739.26 = 45,159.45 : x
  2. Step 2: Convert to fraction form
    80,970.36/111,739.26 = 45,159.45/x
  3. Step 3: Cross multiply
    80,970.36x = 111,739.26 × 45,159.45
  4. Step 4: Simplify right side
    80,970.36x = 5,046,082,966.31
  5. Step 5: Solve for x
    x = 5,046,082,966.31/80,970.36
  6. Step 6: Final answer
    x = 62,320.13

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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.