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Finding the Fourth Proportional to 64,230.20, 88,673.39 and 38,742.99

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Solution

The fourth proportional to 64,230.20, 88,673.39 and 38,742.99 is: 53,486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,230.20 : 88,673.39 = 38,742.99 : x
  2. Step 2: Convert to fraction form
    64,230.20/88,673.39 = 38,742.99/x
  3. Step 3: Cross multiply
    64,230.20x = 88,673.39 × 38,742.99
  4. Step 4: Simplify right side
    64,230.20x = 3,435,472,068.32
  5. Step 5: Solve for x
    x = 3,435,472,068.32/64,230.20
  6. Step 6: Final answer
    x = 53,486.87

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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.