Home / 90,812.76-136,242.18-28,483.80

Finding the Fourth Proportional to 90,812.76, 136,242.18 and 28,483.80

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Solution

The fourth proportional to 90,812.76, 136,242.18 and 28,483.80 is: 42,732.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,812.76 : 136,242.18 = 28,483.80 : x
  2. Step 2: Convert to fraction form
    90,812.76/136,242.18 = 28,483.80/x
  3. Step 3: Cross multiply
    90,812.76x = 136,242.18 × 28,483.80
  4. Step 4: Simplify right side
    90,812.76x = 3,880,695,006.68
  5. Step 5: Solve for x
    x = 3,880,695,006.68/90,812.76
  6. Step 6: Final answer
    x = 42,732.93

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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.