Home / 86,348.30-129,551.86-52,681.72

Finding the Fourth Proportional to 86,348.30, 129,551.86 and 52,681.72

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Solution

The fourth proportional to 86,348.30, 129,551.86 and 52,681.72 is: 79,040.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,348.30 : 129,551.86 = 52,681.72 : x
  2. Step 2: Convert to fraction form
    86,348.30/129,551.86 = 52,681.72/x
  3. Step 3: Cross multiply
    86,348.30x = 129,551.86 × 52,681.72
  4. Step 4: Simplify right side
    86,348.30x = 6,825,014,814.00
  5. Step 5: Solve for x
    x = 6,825,014,814.00/86,348.30
  6. Step 6: Final answer
    x = 79,040.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.