Home / 90,946.80-136,420.20-28,617.30

Finding the Fourth Proportional to 90,946.80, 136,420.20 and 28,617.30

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Solution

The fourth proportional to 90,946.80, 136,420.20 and 28,617.30 is: 42,925.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,946.80 : 136,420.20 = 28,617.30 : x
  2. Step 2: Convert to fraction form
    90,946.80/136,420.20 = 28,617.30/x
  3. Step 3: Cross multiply
    90,946.80x = 136,420.20 × 28,617.30
  4. Step 4: Simplify right side
    90,946.80x = 3,903,977,789.46
  5. Step 5: Solve for x
    x = 3,903,977,789.46/90,946.80
  6. Step 6: Final answer
    x = 42,925.95

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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.