Home / 42,768,092.80-64,152,139.20-20,051,286.40

Finding the Fourth Proportional to 42,768,092.80, 64,152,139.20 and 20,051,286.40

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Solution

The fourth proportional to 42,768,092.80, 64,152,139.20 and 20,051,286.40 is: 30,076,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,092.80 : 64,152,139.20 = 20,051,286.40 : x
  2. Step 2: Convert to fraction form
    42,768,092.80/64,152,139.20 = 20,051,286.40/x
  3. Step 3: Cross multiply
    42,768,092.80x = 64,152,139.20 × 20,051,286.40
  4. Step 4: Simplify right side
    42,768,092.80x = 1,286,332,916,271,866.75
  5. Step 5: Solve for x
    x = 1,286,332,916,271,866.75/42,768,092.80
  6. Step 6: Final answer
    x = 30,076,929.60

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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.