Home / 42,768,021.60-64,152,032.40-18,880,149.60

Finding the Fourth Proportional to 42,768,021.60, 64,152,032.40 and 18,880,149.60

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Solution

The fourth proportional to 42,768,021.60, 64,152,032.40 and 18,880,149.60 is: 28,320,224.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,021.60 : 64,152,032.40 = 18,880,149.60 : x
  2. Step 2: Convert to fraction form
    42,768,021.60/64,152,032.40 = 18,880,149.60/x
  3. Step 3: Cross multiply
    42,768,021.60x = 64,152,032.40 × 18,880,149.60
  4. Step 4: Simplify right side
    42,768,021.60x = 1,211,199,968,856,047
  5. Step 5: Solve for x
    x = 1,211,199,968,856,047/42,768,021.60
  6. Step 6: Final answer
    x = 28,320,224.40

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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.