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Finding the Fourth Proportional to 56,853.88, 78,479.97 and 42,747.70

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Solution

The fourth proportional to 56,853.88, 78,479.97 and 42,747.70 is: 59,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,853.88 : 78,479.97 = 42,747.70 : x
  2. Step 2: Convert to fraction form
    56,853.88/78,479.97 = 42,747.70/x
  3. Step 3: Cross multiply
    56,853.88x = 78,479.97 × 42,747.70
  4. Step 4: Simplify right side
    56,853.88x = 3,354,838,213.57
  5. Step 5: Solve for x
    x = 3,354,838,213.57/56,853.88
  6. Step 6: Final answer
    x = 59,008.08

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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.