Home / 56,754.12-78,319.98-31,259.98

Finding the Fourth Proportional to 56,754.12, 78,319.98 and 31,259.98

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Solution

The fourth proportional to 56,754.12, 78,319.98 and 31,259.98 is: 43,138.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,754.12 : 78,319.98 = 31,259.98 : x
  2. Step 2: Convert to fraction form
    56,754.12/78,319.98 = 31,259.98/x
  3. Step 3: Cross multiply
    56,754.12x = 78,319.98 × 31,259.98
  4. Step 4: Simplify right side
    56,754.12x = 2,448,281,008.40
  5. Step 5: Solve for x
    x = 2,448,281,008.40/56,754.12
  6. Step 6: Final answer
    x = 43,138.38

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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.