Home / 81,570.12-112,594.74-51,406.32

Finding the Fourth Proportional to 81,570.12, 112,594.74 and 51,406.32

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Solution

The fourth proportional to 81,570.12, 112,594.74 and 51,406.32 is: 70,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,570.12 : 112,594.74 = 51,406.32 : x
  2. Step 2: Convert to fraction form
    81,570.12/112,594.74 = 51,406.32/x
  3. Step 3: Cross multiply
    81,570.12x = 112,594.74 × 51,406.32
  4. Step 4: Simplify right side
    81,570.12x = 5,788,081,234.76
  5. Step 5: Solve for x
    x = 5,788,081,234.76/81,570.12
  6. Step 6: Final answer
    x = 70,958.35

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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.