Home / 81,875.64-112,987.26-47,907.48

Finding the Fourth Proportional to 81,875.64, 112,987.26 and 47,907.48

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Solution

The fourth proportional to 81,875.64, 112,987.26 and 47,907.48 is: 66,111.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,875.64 : 112,987.26 = 47,907.48 : x
  2. Step 2: Convert to fraction form
    81,875.64/112,987.26 = 47,907.48/x
  3. Step 3: Cross multiply
    81,875.64x = 112,987.26 × 47,907.48
  4. Step 4: Simplify right side
    81,875.64x = 5,412,934,898.70
  5. Step 5: Solve for x
    x = 5,412,934,898.70/81,875.64
  6. Step 6: Final answer
    x = 66,111.67

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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.