Home / 81,240.60-112,111.26-45,430.20

Finding the Fourth Proportional to 81,240.60, 112,111.26 and 45,430.20

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Solution

The fourth proportional to 81,240.60, 112,111.26 and 45,430.20 is: 62,693.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,240.60 : 112,111.26 = 45,430.20 : x
  2. Step 2: Convert to fraction form
    81,240.60/112,111.26 = 45,430.20/x
  3. Step 3: Cross multiply
    81,240.60x = 112,111.26 × 45,430.20
  4. Step 4: Simplify right side
    81,240.60x = 5,093,236,964.05
  5. Step 5: Solve for x
    x = 5,093,236,964.05/81,240.60
  6. Step 6: Final answer
    x = 62,693.25

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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.