Home / 81,143.40-111,966.76-45,328.96

Finding the Fourth Proportional to 81,143.40, 111,966.76 and 45,328.96

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Solution

The fourth proportional to 81,143.40, 111,966.76 and 45,328.96 is: 62,547.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,143.40 : 111,966.76 = 45,328.96 : x
  2. Step 2: Convert to fraction form
    81,143.40/111,966.76 = 45,328.96/x
  3. Step 3: Cross multiply
    81,143.40x = 111,966.76 × 45,328.96
  4. Step 4: Simplify right side
    81,143.40x = 5,075,336,785.37
  5. Step 5: Solve for x
    x = 5,075,336,785.37/81,143.40
  6. Step 6: Final answer
    x = 62,547.75

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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.