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Finding the Fourth Proportional to 60,610.60, 90,840.30 and 31,040.20

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Solution

The fourth proportional to 60,610.60, 90,840.30 and 31,040.20 is: 46,521.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,610.60 : 90,840.30 = 31,040.20 : x
  2. Step 2: Convert to fraction form
    60,610.60/90,840.30 = 31,040.20/x
  3. Step 3: Cross multiply
    60,610.60x = 90,840.30 × 31,040.20
  4. Step 4: Simplify right side
    60,610.60x = 2,819,701,080.06
  5. Step 5: Solve for x
    x = 2,819,701,080.06/60,610.60
  6. Step 6: Final answer
    x = 46,521.58

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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.