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Finding the Fourth Proportional to 63,655.83, 87,808.49 and 39,740.99

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Solution

The fourth proportional to 63,655.83, 87,808.49 and 39,740.99 is: 54,819.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,655.83 : 87,808.49 = 39,740.99 : x
  2. Step 2: Convert to fraction form
    63,655.83/87,808.49 = 39,740.99/x
  3. Step 3: Cross multiply
    63,655.83x = 87,808.49 × 39,740.99
  4. Step 4: Simplify right side
    63,655.83x = 3,489,595,834.29
  5. Step 5: Solve for x
    x = 3,489,595,834.29/63,655.83
  6. Step 6: Final answer
    x = 54,819.74

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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.