Home / 75,005.82-103,585.50-64,885.68

Finding the Fourth Proportional to 75,005.82, 103,585.50 and 64,885.68

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Solution

The fourth proportional to 75,005.82, 103,585.50 and 64,885.68 is: 89,609.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,005.82 : 103,585.50 = 64,885.68 : x
  2. Step 2: Convert to fraction form
    75,005.82/103,585.50 = 64,885.68/x
  3. Step 3: Cross multiply
    75,005.82x = 103,585.50 × 64,885.68
  4. Step 4: Simplify right side
    75,005.82x = 6,721,215,605.64
  5. Step 5: Solve for x
    x = 6,721,215,605.64/75,005.82
  6. Step 6: Final answer
    x = 89,609.25

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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.