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Finding the Fourth Proportional to 56,817.74, 78,408.87 and 31,668.86

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Solution

The fourth proportional to 56,817.74, 78,408.87 and 31,668.86 is: 43,703.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,817.74 : 78,408.87 = 31,668.86 : x
  2. Step 2: Convert to fraction form
    56,817.74/78,408.87 = 31,668.86/x
  3. Step 3: Cross multiply
    56,817.74x = 78,408.87 × 31,668.86
  4. Step 4: Simplify right side
    56,817.74x = 2,483,119,526.79
  5. Step 5: Solve for x
    x = 2,483,119,526.79/56,817.74
  6. Step 6: Final answer
    x = 43,703.24

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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.