Home / 56,810.64-78,400.80-31,661.76

Finding the Fourth Proportional to 56,810.64, 78,400.80 and 31,661.76

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Solution

The fourth proportional to 56,810.64, 78,400.80 and 31,661.76 is: 43,694.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,810.64 : 78,400.80 = 31,661.76 : x
  2. Step 2: Convert to fraction form
    56,810.64/78,400.80 = 31,661.76/x
  3. Step 3: Cross multiply
    56,810.64x = 78,400.80 × 31,661.76
  4. Step 4: Simplify right side
    56,810.64x = 2,482,307,313.41
  5. Step 5: Solve for x
    x = 2,482,307,313.41/56,810.64
  6. Step 6: Final answer
    x = 43,694.41

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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.