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Finding the Fourth Proportional to 30,045.60, 45,045.72 and 18,196.92

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Solution

The fourth proportional to 30,045.60, 45,045.72 and 18,196.92 is: 27,281.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,045.60 : 45,045.72 = 18,196.92 : x
  2. Step 2: Convert to fraction form
    30,045.60/45,045.72 = 18,196.92/x
  3. Step 3: Cross multiply
    30,045.60x = 45,045.72 × 18,196.92
  4. Step 4: Simplify right side
    30,045.60x = 819,693,363.18
  5. Step 5: Solve for x
    x = 819,693,363.18/30,045.60
  6. Step 6: Final answer
    x = 27,281.64

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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.