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Finding the Fourth Proportional to 56,305.86, 77,700.88 and 30,812.12

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Solution

The fourth proportional to 56,305.86, 77,700.88 and 30,812.12 is: 42,520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,305.86 : 77,700.88 = 30,812.12 : x
  2. Step 2: Convert to fraction form
    56,305.86/77,700.88 = 30,812.12/x
  3. Step 3: Cross multiply
    56,305.86x = 77,700.88 × 30,812.12
  4. Step 4: Simplify right side
    56,305.86x = 2,394,128,838.67
  5. Step 5: Solve for x
    x = 2,394,128,838.67/56,305.86
  6. Step 6: Final answer
    x = 42,520.07

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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.