Home / 98,878.32-136,476.50-56,461.46

Finding the Fourth Proportional to 98,878.32, 136,476.50 and 56,461.46

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Solution

The fourth proportional to 98,878.32, 136,476.50 and 56,461.46 is: 77,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,878.32 : 136,476.50 = 56,461.46 : x
  2. Step 2: Convert to fraction form
    98,878.32/136,476.50 = 56,461.46/x
  3. Step 3: Cross multiply
    98,878.32x = 136,476.50 × 56,461.46
  4. Step 4: Simplify right side
    98,878.32x = 7,705,661,481.00
  5. Step 5: Solve for x
    x = 7,705,661,481.00/98,878.32
  6. Step 6: Final answer
    x = 77,930.75

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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.