Home / 97,989.74-146,985.42-31,430

Finding the Fourth Proportional to 97,989.74, 146,985.42 and 31,430

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Solution

The fourth proportional to 97,989.74, 146,985.42 and 31,430 is: 47,145.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,989.74 : 146,985.42 = 31,430 : x
  2. Step 2: Convert to fraction form
    97,989.74/146,985.42 = 31,430/x
  3. Step 3: Cross multiply
    97,989.74x = 146,985.42 × 31,430
  4. Step 4: Simplify right side
    97,989.74x = 4,619,751,750.60
  5. Step 5: Solve for x
    x = 4,619,751,750.60/97,989.74
  6. Step 6: Final answer
    x = 47,145.26

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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.