Home / 81,570.11-112,521.35-51,344.28

Finding the Fourth Proportional to 81,570.11, 112,521.35 and 51,344.28

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Solution

The fourth proportional to 81,570.11, 112,521.35 and 51,344.28 is: 70,826.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,570.11 : 112,521.35 = 51,344.28 : x
  2. Step 2: Convert to fraction form
    81,570.11/112,521.35 = 51,344.28/x
  3. Step 3: Cross multiply
    81,570.11x = 112,521.35 × 51,344.28
  4. Step 4: Simplify right side
    81,570.11x = 5,777,327,828.74
  5. Step 5: Solve for x
    x = 5,777,327,828.74/81,570.11
  6. Step 6: Final answer
    x = 70,826.53

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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.