Home / 42,768,014.10-64,152,021.15-18,880,142.10

Finding the Fourth Proportional to 42,768,014.10, 64,152,021.15 and 18,880,142.10

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Solution

The fourth proportional to 42,768,014.10, 64,152,021.15 and 18,880,142.10 is: 28,320,213.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,014.10 : 64,152,021.15 = 18,880,142.10 : x
  2. Step 2: Convert to fraction form
    42,768,014.10/64,152,021.15 = 18,880,142.10/x
  3. Step 3: Cross multiply
    42,768,014.10x = 64,152,021.15 × 18,880,142.10
  4. Step 4: Simplify right side
    42,768,014.10x = 1,211,199,275,314,205.50
  5. Step 5: Solve for x
    x = 1,211,199,275,314,205.50/42,768,014.10
  6. Step 6: Final answer
    x = 28,320,213.15

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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.