Home / 98,782.66-136,318.68-56,341.90

Finding the Fourth Proportional to 98,782.66, 136,318.68 and 56,341.90

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Solution

The fourth proportional to 98,782.66, 136,318.68 and 56,341.90 is: 77,751.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,782.66 : 136,318.68 = 56,341.90 : x
  2. Step 2: Convert to fraction form
    98,782.66/136,318.68 = 56,341.90/x
  3. Step 3: Cross multiply
    98,782.66x = 136,318.68 × 56,341.90
  4. Step 4: Simplify right side
    98,782.66x = 7,680,453,436.69
  5. Step 5: Solve for x
    x = 7,680,453,436.69/98,782.66
  6. Step 6: Final answer
    x = 77,751.03

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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.