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Finding the Fourth Proportional to 90,295.42, 124,608.60 and 54,478.51

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Solution

The fourth proportional to 90,295.42, 124,608.60 and 54,478.51 is: 75,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,295.42 : 124,608.60 = 54,478.51 : x
  2. Step 2: Convert to fraction form
    90,295.42/124,608.60 = 54,478.51/x
  3. Step 3: Cross multiply
    90,295.42x = 124,608.60 × 54,478.51
  4. Step 4: Simplify right side
    90,295.42x = 6,788,490,883.83
  5. Step 5: Solve for x
    x = 6,788,490,883.83/90,295.42
  6. Step 6: Final answer
    x = 75,180.90

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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.