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Finding the Fourth Proportional to 98,891.58, 136,474.27 and 55,880.58

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Solution

The fourth proportional to 98,891.58, 136,474.27 and 55,880.58 is: 77,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,891.58 : 136,474.27 = 55,880.58 : x
  2. Step 2: Convert to fraction form
    98,891.58/136,474.27 = 55,880.58/x
  3. Step 3: Cross multiply
    98,891.58x = 136,474.27 × 55,880.58
  4. Step 4: Simplify right side
    98,891.58x = 7,626,261,734.75
  5. Step 5: Solve for x
    x = 7,626,261,734.75/98,891.58
  6. Step 6: Final answer
    x = 77,117.40

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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.