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Finding the Fourth Proportional to 93,862, 129,529.56 and 51,420.70

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Solution

The fourth proportional to 93,862, 129,529.56 and 51,420.70 is: 70,960.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,862 : 129,529.56 = 51,420.70 : x
  2. Step 2: Convert to fraction form
    93,862/129,529.56 = 51,420.70/x
  3. Step 3: Cross multiply
    93,862x = 129,529.56 × 51,420.70
  4. Step 4: Simplify right side
    93,862x = 6,660,500,645.89
  5. Step 5: Solve for x
    x = 6,660,500,645.89/93,862
  6. Step 6: Final answer
    x = 70,960.57

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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.