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Finding the Fourth Proportional to 85,894.52, 128,735.73 and 62,283.11

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Solution

The fourth proportional to 85,894.52, 128,735.73 and 62,283.11 is: 93,347.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,894.52 : 128,735.73 = 62,283.11 : x
  2. Step 2: Convert to fraction form
    85,894.52/128,735.73 = 62,283.11/x
  3. Step 3: Cross multiply
    85,894.52x = 128,735.73 × 62,283.11
  4. Step 4: Simplify right side
    85,894.52x = 8,018,060,988.84
  5. Step 5: Solve for x
    x = 8,018,060,988.84/85,894.52
  6. Step 6: Final answer
    x = 93,347.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.