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Finding the Fourth Proportional to 64,875.50, 89,395.35 and 47,852.78

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Solution

The fourth proportional to 64,875.50, 89,395.35 and 47,852.78 is: 65,938.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,875.50 : 89,395.35 = 47,852.78 : x
  2. Step 2: Convert to fraction form
    64,875.50/89,395.35 = 47,852.78/x
  3. Step 3: Cross multiply
    64,875.50x = 89,395.35 × 47,852.78
  4. Step 4: Simplify right side
    64,875.50x = 4,277,815,390.15
  5. Step 5: Solve for x
    x = 4,277,815,390.15/64,875.50
  6. Step 6: Final answer
    x = 65,938.84

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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.