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Finding the Fourth Proportional to 104,656.56, 144,428.79 and 56,912.70

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Solution

The fourth proportional to 104,656.56, 144,428.79 and 56,912.70 is: 78,541.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,656.56 : 144,428.79 = 56,912.70 : x
  2. Step 2: Convert to fraction form
    104,656.56/144,428.79 = 56,912.70/x
  3. Step 3: Cross multiply
    104,656.56x = 144,428.79 × 56,912.70
  4. Step 4: Simplify right side
    104,656.56x = 8,219,832,396.63
  5. Step 5: Solve for x
    x = 8,219,832,396.63/104,656.56
  6. Step 6: Final answer
    x = 78,541.01

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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.