Home / 98,905.88-136,495.58-56,478.04

Finding the Fourth Proportional to 98,905.88, 136,495.58 and 56,478.04

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Solution

The fourth proportional to 98,905.88, 136,495.58 and 56,478.04 is: 77,942.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,905.88 : 136,495.58 = 56,478.04 : x
  2. Step 2: Convert to fraction form
    98,905.88/136,495.58 = 56,478.04/x
  3. Step 3: Cross multiply
    98,905.88x = 136,495.58 × 56,478.04
  4. Step 4: Simplify right side
    98,905.88x = 7,709,002,827.06
  5. Step 5: Solve for x
    x = 7,709,002,827.06/98,905.88
  6. Step 6: Final answer
    x = 77,942.82

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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.