Home / 90,985-125,560.20-53,260.06

Finding the Fourth Proportional to 90,985, 125,560.20 and 53,260.06

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Solution

The fourth proportional to 90,985, 125,560.20 and 53,260.06 is: 73,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,985 : 125,560.20 = 53,260.06 : x
  2. Step 2: Convert to fraction form
    90,985/125,560.20 = 53,260.06/x
  3. Step 3: Cross multiply
    90,985x = 125,560.20 × 53,260.06
  4. Step 4: Simplify right side
    90,985x = 6,687,343,785.61
  5. Step 5: Solve for x
    x = 6,687,343,785.61/90,985
  6. Step 6: Final answer
    x = 73,499.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.