Home / 31,503,859.20-47,255,788.80-28,155,780.90

Finding the Fourth Proportional to 31,503,859.20, 47,255,788.80 and 28,155,780.90

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Solution

The fourth proportional to 31,503,859.20, 47,255,788.80 and 28,155,780.90 is: 42,233,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,503,859.20 : 47,255,788.80 = 28,155,780.90 : x
  2. Step 2: Convert to fraction form
    31,503,859.20/47,255,788.80 = 28,155,780.90/x
  3. Step 3: Cross multiply
    31,503,859.20x = 47,255,788.80 × 28,155,780.90
  4. Step 4: Simplify right side
    31,503,859.20x = 1,330,523,635,709,473.75
  5. Step 5: Solve for x
    x = 1,330,523,635,709,473.75/31,503,859.20
  6. Step 6: Final answer
    x = 42,233,671.35

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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.