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Finding the Fourth Proportional to 70,145, 96,802.98 and 40,337

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Solution

The fourth proportional to 70,145, 96,802.98 and 40,337 is: 55,666.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,145 : 96,802.98 = 40,337 : x
  2. Step 2: Convert to fraction form
    70,145/96,802.98 = 40,337/x
  3. Step 3: Cross multiply
    70,145x = 96,802.98 × 40,337
  4. Step 4: Simplify right side
    70,145x = 3,904,741,804.26
  5. Step 5: Solve for x
    x = 3,904,741,804.26/70,145
  6. Step 6: Final answer
    x = 55,666.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.