Home / 78,889,400.43-118,334,098.82-21,381,670.45

Finding the Fourth Proportional to 78,889,400.43, 118,334,098.82 and 21,381,670.45

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Solution

The fourth proportional to 78,889,400.43, 118,334,098.82 and 21,381,670.45 is: 32,072,505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,400.43 : 118,334,098.82 = 21,381,670.45 : x
  2. Step 2: Convert to fraction form
    78,889,400.43/118,334,098.82 = 21,381,670.45/x
  3. Step 3: Cross multiply
    78,889,400.43x = 118,334,098.82 × 21,381,670.45
  4. Step 4: Simplify right side
    78,889,400.43x = 2,530,180,703,966,973.50
  5. Step 5: Solve for x
    x = 2,530,180,703,966,973.50/78,889,400.43
  6. Step 6: Final answer
    x = 32,072,505.18

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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.