Home / 90,458.67-135,592.25-30,430.00

Finding the Fourth Proportional to 90,458.67, 135,592.25 and 30,430.00

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Solution

The fourth proportional to 90,458.67, 135,592.25 and 30,430.00 is: 45,612.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,458.67 : 135,592.25 = 30,430.00 : x
  2. Step 2: Convert to fraction form
    90,458.67/135,592.25 = 30,430.00/x
  3. Step 3: Cross multiply
    90,458.67x = 135,592.25 × 30,430.00
  4. Step 4: Simplify right side
    90,458.67x = 4,126,072,822.95
  5. Step 5: Solve for x
    x = 4,126,072,822.95/90,458.67
  6. Step 6: Final answer
    x = 45,612.79

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1.5x scale

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.