Home / 90,642.98-125,095.75-54,841.78

Finding the Fourth Proportional to 90,642.98, 125,095.75 and 54,841.78

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Solution

The fourth proportional to 90,642.98, 125,095.75 and 54,841.78 is: 75,686.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,642.98 : 125,095.75 = 54,841.78 : x
  2. Step 2: Convert to fraction form
    90,642.98/125,095.75 = 54,841.78/x
  3. Step 3: Cross multiply
    90,642.98x = 125,095.75 × 54,841.78
  4. Step 4: Simplify right side
    90,642.98x = 6,860,473,600.44
  5. Step 5: Solve for x
    x = 6,860,473,600.44/90,642.98
  6. Step 6: Final answer
    x = 75,686.76

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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.