Home / 78,583,947.84-107,660,530.98-75,638,563.92

Finding the Fourth Proportional to 78,583,947.84, 107,660,530.98 and 75,638,563.92

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Solution

The fourth proportional to 78,583,947.84, 107,660,530.98 and 75,638,563.92 is: 103,625,335.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,583,947.84 : 107,660,530.98 = 75,638,563.92 : x
  2. Step 2: Convert to fraction form
    78,583,947.84/107,660,530.98 = 75,638,563.92/x
  3. Step 3: Cross multiply
    78,583,947.84x = 107,660,530.98 × 75,638,563.92
  4. Step 4: Simplify right side
    78,583,947.84x = 8,143,287,954,191,871
  5. Step 5: Solve for x
    x = 8,143,287,954,191,871/78,583,947.84
  6. Step 6: Final answer
    x = 103,625,335.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.