Home / 83,582.40-115,344-45,857.28

Finding the Fourth Proportional to 83,582.40, 115,344 and 45,857.28

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Solution

The fourth proportional to 83,582.40, 115,344 and 45,857.28 is: 63,283.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,582.40 : 115,344 = 45,857.28 : x
  2. Step 2: Convert to fraction form
    83,582.40/115,344 = 45,857.28/x
  3. Step 3: Cross multiply
    83,582.40x = 115,344 × 45,857.28
  4. Step 4: Simplify right side
    83,582.40x = 5,289,362,104.32
  5. Step 5: Solve for x
    x = 5,289,362,104.32/83,582.40
  6. Step 6: Final answer
    x = 63,283.20

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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.