Home / 56,500.98-77,971.09-31,007.76

Finding the Fourth Proportional to 56,500.98, 77,971.09 and 31,007.76

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Solution

The fourth proportional to 56,500.98, 77,971.09 and 31,007.76 is: 42,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,500.98 : 77,971.09 = 31,007.76 : x
  2. Step 2: Convert to fraction form
    56,500.98/77,971.09 = 31,007.76/x
  3. Step 3: Cross multiply
    56,500.98x = 77,971.09 × 31,007.76
  4. Step 4: Simplify right side
    56,500.98x = 2,417,708,845.66
  5. Step 5: Solve for x
    x = 2,417,708,845.66/56,500.98
  6. Step 6: Final answer
    x = 42,790.56

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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.