Home / 51,398.10-77,039.55-21,810.90

Finding the Fourth Proportional to 51,398.10, 77,039.55 and 21,810.90

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Solution

The fourth proportional to 51,398.10, 77,039.55 and 21,810.90 is: 32,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,398.10 : 77,039.55 = 21,810.90 : x
  2. Step 2: Convert to fraction form
    51,398.10/77,039.55 = 21,810.90/x
  3. Step 3: Cross multiply
    51,398.10x = 77,039.55 × 21,810.90
  4. Step 4: Simplify right side
    51,398.10x = 1,680,301,921.10
  5. Step 5: Solve for x
    x = 1,680,301,921.10/51,398.10
  6. Step 6: Final answer
    x = 32,691.91

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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.