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Finding the Fourth Proportional to 30,249, 45,373.34 and 7,759.58

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Solution

The fourth proportional to 30,249, 45,373.34 and 7,759.58 is: 11,639.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,249 : 45,373.34 = 7,759.58 : x
  2. Step 2: Convert to fraction form
    30,249/45,373.34 = 7,759.58/x
  3. Step 3: Cross multiply
    30,249x = 45,373.34 × 7,759.58
  4. Step 4: Simplify right side
    30,249x = 352,077,854.13
  5. Step 5: Solve for x
    x = 352,077,854.13/30,249
  6. Step 6: Final answer
    x = 11,639.32

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.