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Finding the Fourth Proportional to 98,316.30, 135,688.01 and 55,881.21

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Solution

The fourth proportional to 98,316.30, 135,688.01 and 55,881.21 is: 77,122.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,316.30 : 135,688.01 = 55,881.21 : x
  2. Step 2: Convert to fraction form
    98,316.30/135,688.01 = 55,881.21/x
  3. Step 3: Cross multiply
    98,316.30x = 135,688.01 × 55,881.21
  4. Step 4: Simplify right side
    98,316.30x = 7,582,410,181.29
  5. Step 5: Solve for x
    x = 7,582,410,181.29/98,316.30
  6. Step 6: Final answer
    x = 77,122.62

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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.