Home / 80,393.16-111,036.24-64,316.28

Finding the Fourth Proportional to 80,393.16, 111,036.24 and 64,316.28

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Solution

The fourth proportional to 80,393.16, 111,036.24 and 64,316.28 is: 88,831.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,393.16 : 111,036.24 = 64,316.28 : x
  2. Step 2: Convert to fraction form
    80,393.16/111,036.24 = 64,316.28/x
  3. Step 3: Cross multiply
    80,393.16x = 111,036.24 × 64,316.28
  4. Step 4: Simplify right side
    80,393.16x = 7,141,437,901.99
  5. Step 5: Solve for x
    x = 7,141,437,901.99/80,393.16
  6. Step 6: Final answer
    x = 88,831.41

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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.