Home / 56,970.19-78,623.46-31,478.79

Finding the Fourth Proportional to 56,970.19, 78,623.46 and 31,478.79

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Solution

The fourth proportional to 56,970.19, 78,623.46 and 31,478.79 is: 43,443.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,970.19 : 78,623.46 = 31,478.79 : x
  2. Step 2: Convert to fraction form
    56,970.19/78,623.46 = 31,478.79/x
  3. Step 3: Cross multiply
    56,970.19x = 78,623.46 × 31,478.79
  4. Step 4: Simplify right side
    56,970.19x = 2,474,971,386.41
  5. Step 5: Solve for x
    x = 2,474,971,386.41/56,970.19
  6. Step 6: Final answer
    x = 43,443.27

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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.