Home / 42,080.20-63,110.58-12,490.90

Finding the Fourth Proportional to 42,080.20, 63,110.58 and 12,490.90

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Solution

The fourth proportional to 42,080.20, 63,110.58 and 12,490.90 is: 18,733.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,080.20 : 63,110.58 = 12,490.90 : x
  2. Step 2: Convert to fraction form
    42,080.20/63,110.58 = 12,490.90/x
  3. Step 3: Cross multiply
    42,080.20x = 63,110.58 × 12,490.90
  4. Step 4: Simplify right side
    42,080.20x = 788,307,943.72
  5. Step 5: Solve for x
    x = 788,307,943.72/42,080.20
  6. Step 6: Final answer
    x = 18,733.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.