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Finding the Fourth Proportional to 30,104.16, 45,152.64 and 7,919.24

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Solution

The fourth proportional to 30,104.16, 45,152.64 and 7,919.24 is: 11,877.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,104.16 : 45,152.64 = 7,919.24 : x
  2. Step 2: Convert to fraction form
    30,104.16/45,152.64 = 7,919.24/x
  3. Step 3: Cross multiply
    30,104.16x = 45,152.64 × 7,919.24
  4. Step 4: Simplify right side
    30,104.16x = 357,574,592.79
  5. Step 5: Solve for x
    x = 357,574,592.79/30,104.16
  6. Step 6: Final answer
    x = 11,877.91

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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.