Home / 98,862.80-136,440.44-56,427.72

Finding the Fourth Proportional to 98,862.80, 136,440.44 and 56,427.72

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Solution

The fourth proportional to 98,862.80, 136,440.44 and 56,427.72 is: 77,875.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,862.80 : 136,440.44 = 56,427.72 : x
  2. Step 2: Convert to fraction form
    98,862.80/136,440.44 = 56,427.72/x
  3. Step 3: Cross multiply
    98,862.80x = 136,440.44 × 56,427.72
  4. Step 4: Simplify right side
    98,862.80x = 7,699,022,945.00
  5. Step 5: Solve for x
    x = 7,699,022,945.00/98,862.80
  6. Step 6: Final answer
    x = 77,875.83

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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.