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Finding the Fourth Proportional to 55,430, 76,495.08 and 30,281.12

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Solution

The fourth proportional to 55,430, 76,495.08 and 30,281.12 is: 41,788.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,430 : 76,495.08 = 30,281.12 : x
  2. Step 2: Convert to fraction form
    55,430/76,495.08 = 30,281.12/x
  3. Step 3: Cross multiply
    55,430x = 76,495.08 × 30,281.12
  4. Step 4: Simplify right side
    55,430x = 2,316,356,696.89
  5. Step 5: Solve for x
    x = 2,316,356,696.89/55,430
  6. Step 6: Final answer
    x = 41,788.86

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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.