Home / 56,979,182.21-78,631,340.94-30,873,679.45

Finding the Fourth Proportional to 56,979,182.21, 78,631,340.94 and 30,873,679.45

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Solution

The fourth proportional to 56,979,182.21, 78,631,340.94 and 30,873,679.45 is: 42,605,715.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,979,182.21 : 78,631,340.94 = 30,873,679.45 : x
  2. Step 2: Convert to fraction form
    56,979,182.21/78,631,340.94 = 30,873,679.45/x
  3. Step 3: Cross multiply
    56,979,182.21x = 78,631,340.94 × 30,873,679.45
  4. Step 4: Simplify right side
    56,979,182.21x = 2,427,638,814,708,643.50
  5. Step 5: Solve for x
    x = 2,427,638,814,708,643.50/56,979,182.21
  6. Step 6: Final answer
    x = 42,605,715.29

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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.