Home / 56,070.40-77,377.28-30,919.68

Finding the Fourth Proportional to 56,070.40, 77,377.28 and 30,919.68

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Solution

The fourth proportional to 56,070.40, 77,377.28 and 30,919.68 is: 42,669.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,070.40 : 77,377.28 = 30,919.68 : x
  2. Step 2: Convert to fraction form
    56,070.40/77,377.28 = 30,919.68/x
  3. Step 3: Cross multiply
    56,070.40x = 77,377.28 × 30,919.68
  4. Step 4: Simplify right side
    56,070.40x = 2,392,480,736.87
  5. Step 5: Solve for x
    x = 2,392,480,736.87/56,070.40
  6. Step 6: Final answer
    x = 42,669.23

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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.