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Finding the Fourth Proportional to 64,779.60, 89,365.30 and 37,905.62

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Solution

The fourth proportional to 64,779.60, 89,365.30 and 37,905.62 is: 52,291.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,779.60 : 89,365.30 = 37,905.62 : x
  2. Step 2: Convert to fraction form
    64,779.60/89,365.30 = 37,905.62/x
  3. Step 3: Cross multiply
    64,779.60x = 89,365.30 × 37,905.62
  4. Step 4: Simplify right side
    64,779.60x = 3,387,447,170.68
  5. Step 5: Solve for x
    x = 3,387,447,170.68/64,779.60
  6. Step 6: Final answer
    x = 52,291.88

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1.5x scale

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.