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Finding the Fourth Proportional to 56,285.79, 77,673.76 and 30,792.89

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Solution

The fourth proportional to 56,285.79, 77,673.76 and 30,792.89 is: 42,493.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,285.79 : 77,673.76 = 30,792.89 : x
  2. Step 2: Convert to fraction form
    56,285.79/77,673.76 = 30,792.89/x
  3. Step 3: Cross multiply
    56,285.79x = 77,673.76 × 30,792.89
  4. Step 4: Simplify right side
    56,285.79x = 2,391,799,227.85
  5. Step 5: Solve for x
    x = 2,391,799,227.85/56,285.79
  6. Step 6: Final answer
    x = 42,493.84

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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.