Home / 90,090.65-135,152.45-30,113.45

Finding the Fourth Proportional to 90,090.65, 135,152.45 and 30,113.45

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Solution

The fourth proportional to 90,090.65, 135,152.45 and 30,113.45 is: 45,175.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,090.65 : 135,152.45 = 30,113.45 : x
  2. Step 2: Convert to fraction form
    90,090.65/135,152.45 = 30,113.45/x
  3. Step 3: Cross multiply
    90,090.65x = 135,152.45 × 30,113.45
  4. Step 4: Simplify right side
    90,090.65x = 4,069,906,545.45
  5. Step 5: Solve for x
    x = 4,069,906,545.45/90,090.65
  6. Step 6: Final answer
    x = 45,175.68

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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.