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Finding the Fourth Proportional to 30,329,114.40, 45,493,671.60 and 20,125,447.20

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Solution

The fourth proportional to 30,329,114.40, 45,493,671.60 and 20,125,447.20 is: 30,188,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,329,114.40 : 45,493,671.60 = 20,125,447.20 : x
  2. Step 2: Convert to fraction form
    30,329,114.40/45,493,671.60 = 20,125,447.20/x
  3. Step 3: Cross multiply
    30,329,114.40x = 45,493,671.60 × 20,125,447.20
  4. Step 4: Simplify right side
    30,329,114.40x = 915,580,485,719,939.50
  5. Step 5: Solve for x
    x = 915,580,485,719,939.50/30,329,114.40
  6. Step 6: Final answer
    x = 30,188,170.80

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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.