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Finding the Fourth Proportional to 88,208.57, 121,728.40 and 47,922.32

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Solution

The fourth proportional to 88,208.57, 121,728.40 and 47,922.32 is: 66,133.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,208.57 : 121,728.40 = 47,922.32 : x
  2. Step 2: Convert to fraction form
    88,208.57/121,728.40 = 47,922.32/x
  3. Step 3: Cross multiply
    88,208.57x = 121,728.40 × 47,922.32
  4. Step 4: Simplify right side
    88,208.57x = 5,833,507,337.89
  5. Step 5: Solve for x
    x = 5,833,507,337.89/88,208.57
  6. Step 6: Final answer
    x = 66,133.11

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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.