Home / 77,904.72-116,710.20-38,415.60

Finding the Fourth Proportional to 77,904.72, 116,710.20 and 38,415.60

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Solution

The fourth proportional to 77,904.72, 116,710.20 and 38,415.60 is: 57,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,904.72 : 116,710.20 = 38,415.60 : x
  2. Step 2: Convert to fraction form
    77,904.72/116,710.20 = 38,415.60/x
  3. Step 3: Cross multiply
    77,904.72x = 116,710.20 × 38,415.60
  4. Step 4: Simplify right side
    77,904.72x = 4,483,492,359.12
  5. Step 5: Solve for x
    x = 4,483,492,359.12/77,904.72
  6. Step 6: Final answer
    x = 57,550.97

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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.