Home / 81,157.90-111,948.20-52,430.97

Finding the Fourth Proportional to 81,157.90, 111,948.20 and 52,430.97

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Solution

The fourth proportional to 81,157.90, 111,948.20 and 52,430.97 is: 72,322.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,157.90 : 111,948.20 = 52,430.97 : x
  2. Step 2: Convert to fraction form
    81,157.90/111,948.20 = 52,430.97/x
  3. Step 3: Cross multiply
    81,157.90x = 111,948.20 × 52,430.97
  4. Step 4: Simplify right side
    81,157.90x = 5,869,552,902.63
  5. Step 5: Solve for x
    x = 5,869,552,902.63/81,157.90
  6. Step 6: Final answer
    x = 72,322.63

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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.