Home / 86,763.47-129,910.40-56,702.80

Finding the Fourth Proportional to 86,763.47, 129,910.40 and 56,702.80

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Solution

The fourth proportional to 86,763.47, 129,910.40 and 56,702.80 is: 84,900.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,763.47 : 129,910.40 = 56,702.80 : x
  2. Step 2: Convert to fraction form
    86,763.47/129,910.40 = 56,702.80/x
  3. Step 3: Cross multiply
    86,763.47x = 129,910.40 × 56,702.80
  4. Step 4: Simplify right side
    86,763.47x = 7,366,283,520.63
  5. Step 5: Solve for x
    x = 7,366,283,520.63/86,763.47
  6. Step 6: Final answer
    x = 84,900.75

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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.