Home / 81,215.08-112,079.28-45,406.60

Finding the Fourth Proportional to 81,215.08, 112,079.28 and 45,406.60

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Solution

The fourth proportional to 81,215.08, 112,079.28 and 45,406.60 is: 62,662.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,215.08 : 112,079.28 = 45,406.60 : x
  2. Step 2: Convert to fraction form
    81,215.08/112,079.28 = 45,406.60/x
  3. Step 3: Cross multiply
    81,215.08x = 112,079.28 × 45,406.60
  4. Step 4: Simplify right side
    81,215.08x = 5,089,139,035.25
  5. Step 5: Solve for x
    x = 5,089,139,035.25/81,215.08
  6. Step 6: Final answer
    x = 62,662.49

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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.