Home / 98,988.21-136,609.07-56,555.01

Finding the Fourth Proportional to 98,988.21, 136,609.07 and 56,555.01

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Solution

The fourth proportional to 98,988.21, 136,609.07 and 56,555.01 is: 78,048.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,988.21 : 136,609.07 = 56,555.01 : x
  2. Step 2: Convert to fraction form
    98,988.21/136,609.07 = 56,555.01/x
  3. Step 3: Cross multiply
    98,988.21x = 136,609.07 × 56,555.01
  4. Step 4: Simplify right side
    98,988.21x = 7,725,927,037.17
  5. Step 5: Solve for x
    x = 7,725,927,037.17/98,988.21
  6. Step 6: Final answer
    x = 78,048.96

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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.