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Finding the Fourth Proportional to 93,860, 129,526.80 and 51,418.70

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Solution

The fourth proportional to 93,860, 129,526.80 and 51,418.70 is: 70,957.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,860 : 129,526.80 = 51,418.70 : x
  2. Step 2: Convert to fraction form
    93,860/129,526.80 = 51,418.70/x
  3. Step 3: Cross multiply
    93,860x = 129,526.80 × 51,418.70
  4. Step 4: Simplify right side
    93,860x = 6,660,099,671.16
  5. Step 5: Solve for x
    x = 6,660,099,671.16/93,860
  6. Step 6: Final answer
    x = 70,957.81

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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.