Home / 98,899.79-136,478.52-55,880.89

Finding the Fourth Proportional to 98,899.79, 136,478.52 and 55,880.89

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Solution

The fourth proportional to 98,899.79, 136,478.52 and 55,880.89 is: 77,113.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,899.79 : 136,478.52 = 55,880.89 : x
  2. Step 2: Convert to fraction form
    98,899.79/136,478.52 = 55,880.89/x
  3. Step 3: Cross multiply
    98,899.79x = 136,478.52 × 55,880.89
  4. Step 4: Simplify right side
    98,899.79x = 7,626,540,822.29
  5. Step 5: Solve for x
    x = 7,626,540,822.29/98,899.79
  6. Step 6: Final answer
    x = 77,113.83

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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.