Home / 98,767.36-136,272-56,310.40

Finding the Fourth Proportional to 98,767.36, 136,272 and 56,310.40

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Solution

The fourth proportional to 98,767.36, 136,272 and 56,310.40 is: 77,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,767.36 : 136,272 = 56,310.40 : x
  2. Step 2: Convert to fraction form
    98,767.36/136,272 = 56,310.40/x
  3. Step 3: Cross multiply
    98,767.36x = 136,272 × 56,310.40
  4. Step 4: Simplify right side
    98,767.36x = 7,673,530,828.80
  5. Step 5: Solve for x
    x = 7,673,530,828.80/98,767.36
  6. Step 6: Final answer
    x = 77,692.98

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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.