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Finding the Fourth Proportional to 84,685, 116,856.90 and 48,886.56

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Solution

The fourth proportional to 84,685, 116,856.90 and 48,886.56 is: 67,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,685 : 116,856.90 = 48,886.56 : x
  2. Step 2: Convert to fraction form
    84,685/116,856.90 = 48,886.56/x
  3. Step 3: Cross multiply
    84,685x = 116,856.90 × 48,886.56
  4. Step 4: Simplify right side
    84,685x = 5,712,731,853.26
  5. Step 5: Solve for x
    x = 5,712,731,853.26/84,685
  6. Step 6: Final answer
    x = 67,458.60

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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.