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Finding the Fourth Proportional to 61,403.84, 84,729.68 and 38,734.24

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Solution

The fourth proportional to 61,403.84, 84,729.68 and 38,734.24 is: 53,448.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,403.84 : 84,729.68 = 38,734.24 : x
  2. Step 2: Convert to fraction form
    61,403.84/84,729.68 = 38,734.24/x
  3. Step 3: Cross multiply
    61,403.84x = 84,729.68 × 38,734.24
  4. Step 4: Simplify right side
    61,403.84x = 3,281,939,760.24
  5. Step 5: Solve for x
    x = 3,281,939,760.24/61,403.84
  6. Step 6: Final answer
    x = 53,448.44

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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.