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Finding the Fourth Proportional to 101,755.05, 140,430.37 and 56,447.63

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Solution

The fourth proportional to 101,755.05, 140,430.37 and 56,447.63 is: 77,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,755.05 : 140,430.37 = 56,447.63 : x
  2. Step 2: Convert to fraction form
    101,755.05/140,430.37 = 56,447.63/x
  3. Step 3: Cross multiply
    101,755.05x = 140,430.37 × 56,447.63
  4. Step 4: Simplify right side
    101,755.05x = 7,926,962,225.01
  5. Step 5: Solve for x
    x = 7,926,962,225.01/101,755.05
  6. Step 6: Final answer
    x = 77,902.40

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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.