Home / 56,997.69-78,657.05-31,156.76

Finding the Fourth Proportional to 56,997.69, 78,657.05 and 31,156.76

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Solution

The fourth proportional to 56,997.69, 78,657.05 and 31,156.76 is: 42,996.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,997.69 : 78,657.05 = 31,156.76 : x
  2. Step 2: Convert to fraction form
    56,997.69/78,657.05 = 31,156.76/x
  3. Step 3: Cross multiply
    56,997.69x = 78,657.05 × 31,156.76
  4. Step 4: Simplify right side
    56,997.69x = 2,450,698,907.05
  5. Step 5: Solve for x
    x = 2,450,698,907.05/56,997.69
  6. Step 6: Final answer
    x = 42,996.46

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1.5x scale

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.