Home / 88,100.96-121,580.20-47,815.08

Finding the Fourth Proportional to 88,100.96, 121,580.20 and 47,815.08

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Solution

The fourth proportional to 88,100.96, 121,580.20 and 47,815.08 is: 65,985.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,100.96 : 121,580.20 = 47,815.08 : x
  2. Step 2: Convert to fraction form
    88,100.96/121,580.20 = 47,815.08/x
  3. Step 3: Cross multiply
    88,100.96x = 121,580.20 × 47,815.08
  4. Step 4: Simplify right side
    88,100.96x = 5,813,366,989.42
  5. Step 5: Solve for x
    x = 5,813,366,989.42/88,100.96
  6. Step 6: Final answer
    x = 65,985.29

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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.