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Finding the Fourth Proportional to 64,779.77, 89,398.86 and 36,099.47

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Solution

The fourth proportional to 64,779.77, 89,398.86 and 36,099.47 is: 49,818.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,779.77 : 89,398.86 = 36,099.47 : x
  2. Step 2: Convert to fraction form
    64,779.77/89,398.86 = 36,099.47/x
  3. Step 3: Cross multiply
    64,779.77x = 89,398.86 × 36,099.47
  4. Step 4: Simplify right side
    64,779.77x = 3,227,251,284.11
  5. Step 5: Solve for x
    x = 3,227,251,284.11/64,779.77
  6. Step 6: Final answer
    x = 49,818.81

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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.