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Finding the Fourth Proportional to 101,651.89, 140,280.43 and 56,330.63

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Solution

The fourth proportional to 101,651.89, 140,280.43 and 56,330.63 is: 77,736.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,651.89 : 140,280.43 = 56,330.63 : x
  2. Step 2: Convert to fraction form
    101,651.89/140,280.43 = 56,330.63/x
  3. Step 3: Cross multiply
    101,651.89x = 140,280.43 × 56,330.63
  4. Step 4: Simplify right side
    101,651.89x = 7,902,084,998.57
  5. Step 5: Solve for x
    x = 7,902,084,998.57/101,651.89
  6. Step 6: Final answer
    x = 77,736.72

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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.