Home / 56,814.98-78,401.14-31,320.02

Finding the Fourth Proportional to 56,814.98, 78,401.14 and 31,320.02

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Solution

The fourth proportional to 56,814.98, 78,401.14 and 31,320.02 is: 43,219.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,814.98 : 78,401.14 = 31,320.02 : x
  2. Step 2: Convert to fraction form
    56,814.98/78,401.14 = 31,320.02/x
  3. Step 3: Cross multiply
    56,814.98x = 78,401.14 × 31,320.02
  4. Step 4: Simplify right side
    56,814.98x = 2,455,525,390.53
  5. Step 5: Solve for x
    x = 2,455,525,390.53/56,814.98
  6. Step 6: Final answer
    x = 43,219.69

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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.