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Finding the Fourth Proportional to 78,484.56, 108,260.64 and 73,235.76

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Solution

The fourth proportional to 78,484.56, 108,260.64 and 73,235.76 is: 101,020.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,484.56 : 108,260.64 = 73,235.76 : x
  2. Step 2: Convert to fraction form
    78,484.56/108,260.64 = 73,235.76/x
  3. Step 3: Cross multiply
    78,484.56x = 108,260.64 × 73,235.76
  4. Step 4: Simplify right side
    78,484.56x = 7,928,550,248.49
  5. Step 5: Solve for x
    x = 7,928,550,248.49/78,484.56
  6. Step 6: Final answer
    x = 101,020.51

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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.