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Finding the Fourth Proportional to 99,430.63, 137,214.29 and 54,718.63

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Solution

The fourth proportional to 99,430.63, 137,214.29 and 54,718.63 is: 75,511.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,430.63 : 137,214.29 = 54,718.63 : x
  2. Step 2: Convert to fraction form
    99,430.63/137,214.29 = 54,718.63/x
  3. Step 3: Cross multiply
    99,430.63x = 137,214.29 × 54,718.63
  4. Step 4: Simplify right side
    99,430.63x = 7,508,177,965.22
  5. Step 5: Solve for x
    x = 7,508,177,965.22/99,430.63
  6. Step 6: Final answer
    x = 75,511.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.