Home / 28,129,937.34-42,140,309.67-20,730,546.66

Finding the Fourth Proportional to 28,129,937.34, 42,140,309.67 and 20,730,546.66

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Solution

The fourth proportional to 28,129,937.34, 42,140,309.67 and 20,730,546.66 is: 31,055,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129,937.34 : 42,140,309.67 = 20,730,546.66 : x
  2. Step 2: Convert to fraction form
    28,129,937.34/42,140,309.67 = 20,730,546.66/x
  3. Step 3: Cross multiply
    28,129,937.34x = 42,140,309.67 × 20,730,546.66
  4. Step 4: Simplify right side
    28,129,937.34x = 873,591,655,880,784.25
  5. Step 5: Solve for x
    x = 873,591,655,880,784.25/28,129,937.34
  6. Step 6: Final answer
    x = 31,055,584.85

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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.