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Finding the Fourth Proportional to 70,303, 97,029.68 and 40,512.28

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Solution

The fourth proportional to 70,303, 97,029.68 and 40,512.28 is: 55,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,303 : 97,029.68 = 40,512.28 : x
  2. Step 2: Convert to fraction form
    70,303/97,029.68 = 40,512.28/x
  3. Step 3: Cross multiply
    70,303x = 97,029.68 × 40,512.28
  4. Step 4: Simplify right side
    70,303x = 3,930,893,564.47
  5. Step 5: Solve for x
    x = 3,930,893,564.47/70,303
  6. Step 6: Final answer
    x = 55,913.60

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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.