Home / 81,428.31-112,370.45-45,618.62

Finding the Fourth Proportional to 81,428.31, 112,370.45 and 45,618.62

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Solution

The fourth proportional to 81,428.31, 112,370.45 and 45,618.62 is: 62,953.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428.31 : 112,370.45 = 45,618.62 : x
  2. Step 2: Convert to fraction form
    81,428.31/112,370.45 = 45,618.62/x
  3. Step 3: Cross multiply
    81,428.31x = 112,370.45 × 45,618.62
  4. Step 4: Simplify right side
    81,428.31x = 5,126,184,295.93
  5. Step 5: Solve for x
    x = 5,126,184,295.93/81,428.31
  6. Step 6: Final answer
    x = 62,953.34

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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.