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Finding the Fourth Proportional to 56,060.88, 77,363.70 and 30,910.40

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Solution

The fourth proportional to 56,060.88, 77,363.70 and 30,910.40 is: 42,656.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,060.88 : 77,363.70 = 30,910.40 : x
  2. Step 2: Convert to fraction form
    56,060.88/77,363.70 = 30,910.40/x
  3. Step 3: Cross multiply
    56,060.88x = 77,363.70 × 30,910.40
  4. Step 4: Simplify right side
    56,060.88x = 2,391,342,912.48
  5. Step 5: Solve for x
    x = 2,391,342,912.48/56,060.88
  6. Step 6: Final answer
    x = 42,656.18

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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.