Home / 76,930.47-115,368.35-29,549.12

Finding the Fourth Proportional to 76,930.47, 115,368.35 and 29,549.12

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Solution

The fourth proportional to 76,930.47, 115,368.35 and 29,549.12 is: 44,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,930.47 : 115,368.35 = 29,549.12 : x
  2. Step 2: Convert to fraction form
    76,930.47/115,368.35 = 29,549.12/x
  3. Step 3: Cross multiply
    76,930.47x = 115,368.35 × 29,549.12
  4. Step 4: Simplify right side
    76,930.47x = 3,409,032,493.76
  5. Step 5: Solve for x
    x = 3,409,032,493.76/76,930.47
  6. Step 6: Final answer
    x = 44,313.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.