Home / 56,751.48-78,316.40-31,257.36

Finding the Fourth Proportional to 56,751.48, 78,316.40 and 31,257.36

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Solution

The fourth proportional to 56,751.48, 78,316.40 and 31,257.36 is: 43,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,751.48 : 78,316.40 = 31,257.36 : x
  2. Step 2: Convert to fraction form
    56,751.48/78,316.40 = 31,257.36/x
  3. Step 3: Cross multiply
    56,751.48x = 78,316.40 × 31,257.36
  4. Step 4: Simplify right side
    56,751.48x = 2,447,963,908.70
  5. Step 5: Solve for x
    x = 2,447,963,908.70/56,751.48
  6. Step 6: Final answer
    x = 43,134.80

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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.