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Finding the Fourth Proportional to 64,708.88, 89,276.84 and 52,751.60

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Solution

The fourth proportional to 64,708.88, 89,276.84 and 52,751.60 is: 72,779.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,708.88 : 89,276.84 = 52,751.60 : x
  2. Step 2: Convert to fraction form
    64,708.88/89,276.84 = 52,751.60/x
  3. Step 3: Cross multiply
    64,708.88x = 89,276.84 × 52,751.60
  4. Step 4: Simplify right side
    64,708.88x = 4,709,496,152.94
  5. Step 5: Solve for x
    x = 4,709,496,152.94/64,708.88
  6. Step 6: Final answer
    x = 72,779.75

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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.