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Finding the Fourth Proportional to 56,712.53, 78,262.53 and 31,562.03

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Solution

The fourth proportional to 56,712.53, 78,262.53 and 31,562.03 is: 43,555.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,712.53 : 78,262.53 = 31,562.03 : x
  2. Step 2: Convert to fraction form
    56,712.53/78,262.53 = 31,562.03/x
  3. Step 3: Cross multiply
    56,712.53x = 78,262.53 × 31,562.03
  4. Step 4: Simplify right side
    56,712.53x = 2,470,124,319.74
  5. Step 5: Solve for x
    x = 2,470,124,319.74/56,712.53
  6. Step 6: Final answer
    x = 43,555.18

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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.