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Finding the Fourth Proportional to 64,007.90, 96,040.65 and 30,715.10

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Solution

The fourth proportional to 64,007.90, 96,040.65 and 30,715.10 is: 46,086.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,007.90 : 96,040.65 = 30,715.10 : x
  2. Step 2: Convert to fraction form
    64,007.90/96,040.65 = 30,715.10/x
  3. Step 3: Cross multiply
    64,007.90x = 96,040.65 × 30,715.10
  4. Step 4: Simplify right side
    64,007.90x = 2,949,898,168.82
  5. Step 5: Solve for x
    x = 2,949,898,168.82/64,007.90
  6. Step 6: Final answer
    x = 46,086.47

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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.