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Finding the Fourth Proportional to 30,587.42, 45,881.10 and 8,400.89

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Solution

The fourth proportional to 30,587.42, 45,881.10 and 8,400.89 is: 12,601.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,587.42 : 45,881.10 = 8,400.89 : x
  2. Step 2: Convert to fraction form
    30,587.42/45,881.10 = 8,400.89/x
  3. Step 3: Cross multiply
    30,587.42x = 45,881.10 × 8,400.89
  4. Step 4: Simplify right side
    30,587.42x = 385,441,844.77
  5. Step 5: Solve for x
    x = 385,441,844.77/30,587.42
  6. Step 6: Final answer
    x = 12,601.32

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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.