Home / 77,784.48-116,671.08-30,390.66

Finding the Fourth Proportional to 77,784.48, 116,671.08 and 30,390.66

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Solution

The fourth proportional to 77,784.48, 116,671.08 and 30,390.66 is: 45,583.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,784.48 : 116,671.08 = 30,390.66 : x
  2. Step 2: Convert to fraction form
    77,784.48/116,671.08 = 30,390.66/x
  3. Step 3: Cross multiply
    77,784.48x = 116,671.08 × 30,390.66
  4. Step 4: Simplify right side
    77,784.48x = 3,545,711,124.11
  5. Step 5: Solve for x
    x = 3,545,711,124.11/77,784.48
  6. Step 6: Final answer
    x = 45,583.79

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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.