Home / 84,539.61-126,856.07-47,120.76

Finding the Fourth Proportional to 84,539.61, 126,856.07 and 47,120.76

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Solution

The fourth proportional to 84,539.61, 126,856.07 and 47,120.76 is: 70,707.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,539.61 : 126,856.07 = 47,120.76 : x
  2. Step 2: Convert to fraction form
    84,539.61/126,856.07 = 47,120.76/x
  3. Step 3: Cross multiply
    84,539.61x = 126,856.07 × 47,120.76
  4. Step 4: Simplify right side
    84,539.61x = 5,977,554,193.41
  5. Step 5: Solve for x
    x = 5,977,554,193.41/84,539.61
  6. Step 6: Final answer
    x = 70,707.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.