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Finding the Fourth Proportional to 85,836.84, 118,389.76 and 75,208.02

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Solution

The fourth proportional to 85,836.84, 118,389.76 and 75,208.02 is: 103,730.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,836.84 : 118,389.76 = 75,208.02 : x
  2. Step 2: Convert to fraction form
    85,836.84/118,389.76 = 75,208.02/x
  3. Step 3: Cross multiply
    85,836.84x = 118,389.76 × 75,208.02
  4. Step 4: Simplify right side
    85,836.84x = 8,903,859,437.88
  5. Step 5: Solve for x
    x = 8,903,859,437.88/85,836.84
  6. Step 6: Final answer
    x = 103,730.05

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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.