Home / 98,579.08-136,063.56-56,162.80

Finding the Fourth Proportional to 98,579.08, 136,063.56 and 56,162.80

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Solution

The fourth proportional to 98,579.08, 136,063.56 and 56,162.80 is: 77,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,579.08 : 136,063.56 = 56,162.80 : x
  2. Step 2: Convert to fraction form
    98,579.08/136,063.56 = 56,162.80/x
  3. Step 3: Cross multiply
    98,579.08x = 136,063.56 × 56,162.80
  4. Step 4: Simplify right side
    98,579.08x = 7,641,710,507.57
  5. Step 5: Solve for x
    x = 7,641,710,507.57/98,579.08
  6. Step 6: Final answer
    x = 77,518.58

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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.