Home / 28,085,909.80-42,132,145.20-8,918,604.40

Finding the Fourth Proportional to 28,085,909.80, 42,132,145.20 and 8,918,604.40

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Solution

The fourth proportional to 28,085,909.80, 42,132,145.20 and 8,918,604.40 is: 13,378,948.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085,909.80 : 42,132,145.20 = 8,918,604.40 : x
  2. Step 2: Convert to fraction form
    28,085,909.80/42,132,145.20 = 8,918,604.40/x
  3. Step 3: Cross multiply
    28,085,909.80x = 42,132,145.20 × 8,918,604.40
  4. Step 4: Simplify right side
    28,085,909.80x = 375,759,935,562,158.94
  5. Step 5: Solve for x
    x = 375,759,935,562,158.94/28,085,909.80
  6. Step 6: Final answer
    x = 13,378,948.31

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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.