Home / 81,712.32-112,763.44-45,903.84

Finding the Fourth Proportional to 81,712.32, 112,763.44 and 45,903.84

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Solution

The fourth proportional to 81,712.32, 112,763.44 and 45,903.84 is: 63,347.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,712.32 : 112,763.44 = 45,903.84 : x
  2. Step 2: Convert to fraction form
    81,712.32/112,763.44 = 45,903.84/x
  3. Step 3: Cross multiply
    81,712.32x = 112,763.44 × 45,903.84
  4. Step 4: Simplify right side
    81,712.32x = 5,176,274,907.61
  5. Step 5: Solve for x
    x = 5,176,274,907.61/81,712.32
  6. Step 6: Final answer
    x = 63,347.55

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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.