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Finding the Fourth Proportional to 56,657.92, 78,193.92 and 31,509.76

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Solution

The fourth proportional to 56,657.92, 78,193.92 and 31,509.76 is: 43,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,657.92 : 78,193.92 = 31,509.76 : x
  2. Step 2: Convert to fraction form
    56,657.92/78,193.92 = 31,509.76/x
  3. Step 3: Cross multiply
    56,657.92x = 78,193.92 × 31,509.76
  4. Step 4: Simplify right side
    56,657.92x = 2,463,871,652.66
  5. Step 5: Solve for x
    x = 2,463,871,652.66/56,657.92
  6. Step 6: Final answer
    x = 43,486.80

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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.