Home / 60,712.40-91,071.30-20,730.80

Finding the Fourth Proportional to 60,712.40, 91,071.30 and 20,730.80

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Solution

The fourth proportional to 60,712.40, 91,071.30 and 20,730.80 is: 31,097.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,712.40 : 91,071.30 = 20,730.80 : x
  2. Step 2: Convert to fraction form
    60,712.40/91,071.30 = 20,730.80/x
  3. Step 3: Cross multiply
    60,712.40x = 91,071.30 × 20,730.80
  4. Step 4: Simplify right side
    60,712.40x = 1,887,980,906.04
  5. Step 5: Solve for x
    x = 1,887,980,906.04/60,712.40
  6. Step 6: Final answer
    x = 31,097.12

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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.