Home / 78,889,407.68-118,334,109.69-21,381,677.70

Finding the Fourth Proportional to 78,889,407.68, 118,334,109.69 and 21,381,677.70

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Solution

The fourth proportional to 78,889,407.68, 118,334,109.69 and 21,381,677.70 is: 32,072,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,407.68 : 118,334,109.69 = 21,381,677.70 : x
  2. Step 2: Convert to fraction form
    78,889,407.68/118,334,109.69 = 21,381,677.70/x
  3. Step 3: Cross multiply
    78,889,407.68x = 118,334,109.69 × 21,381,677.70
  4. Step 4: Simplify right side
    78,889,407.68x = 2,530,181,794,308,027
  5. Step 5: Solve for x
    x = 2,530,181,794,308,027/78,889,407.68
  6. Step 6: Final answer
    x = 32,072,516.05

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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.