Home / 76,742.40-105,920.84-51,577.32

Finding the Fourth Proportional to 76,742.40, 105,920.84 and 51,577.32

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Solution

The fourth proportional to 76,742.40, 105,920.84 and 51,577.32 is: 71,187.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,742.40 : 105,920.84 = 51,577.32 : x
  2. Step 2: Convert to fraction form
    76,742.40/105,920.84 = 51,577.32/x
  3. Step 3: Cross multiply
    76,742.40x = 105,920.84 × 51,577.32
  4. Step 4: Simplify right side
    76,742.40x = 5,463,113,059.35
  5. Step 5: Solve for x
    x = 5,463,113,059.35/76,742.40
  6. Step 6: Final answer
    x = 71,187.68

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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.