Home / 78,889,486.61-118,334,228.10-21,381,756.64

Finding the Fourth Proportional to 78,889,486.61, 118,334,228.10 and 21,381,756.64

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Solution

The fourth proportional to 78,889,486.61, 118,334,228.10 and 21,381,756.64 is: 32,072,634.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,486.61 : 118,334,228.10 = 21,381,756.64 : x
  2. Step 2: Convert to fraction form
    78,889,486.61/118,334,228.10 = 21,381,756.64/x
  3. Step 3: Cross multiply
    78,889,486.61x = 118,334,228.10 × 21,381,756.64
  4. Step 4: Simplify right side
    78,889,486.61x = 2,530,193,667,040,432.50
  5. Step 5: Solve for x
    x = 2,530,193,667,040,432.50/78,889,486.61
  6. Step 6: Final answer
    x = 32,072,634.46

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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.