Home / 88,199.12-121,712.74-47,911.98

Finding the Fourth Proportional to 88,199.12, 121,712.74 and 47,911.98

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Solution

The fourth proportional to 88,199.12, 121,712.74 and 47,911.98 is: 66,117.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,199.12 : 121,712.74 = 47,911.98 : x
  2. Step 2: Convert to fraction form
    88,199.12/121,712.74 = 47,911.98/x
  3. Step 3: Cross multiply
    88,199.12x = 121,712.74 × 47,911.98
  4. Step 4: Simplify right side
    88,199.12x = 5,831,497,788.42
  5. Step 5: Solve for x
    x = 5,831,497,788.42/88,199.12
  6. Step 6: Final answer
    x = 66,117.42

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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.