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Finding the Fourth Proportional to 56,479.68, 77,943.24 and 31,330.80

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Solution

The fourth proportional to 56,479.68, 77,943.24 and 31,330.80 is: 43,237.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,479.68 : 77,943.24 = 31,330.80 : x
  2. Step 2: Convert to fraction form
    56,479.68/77,943.24 = 31,330.80/x
  3. Step 3: Cross multiply
    56,479.68x = 77,943.24 × 31,330.80
  4. Step 4: Simplify right side
    56,479.68x = 2,442,024,063.79
  5. Step 5: Solve for x
    x = 2,442,024,063.79/56,479.68
  6. Step 6: Final answer
    x = 43,237.21

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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.