Home / 78,889,234.27-118,333,851.71-21,381,505.51

Finding the Fourth Proportional to 78,889,234.27, 118,333,851.71 and 21,381,505.51

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Solution

The fourth proportional to 78,889,234.27, 118,333,851.71 and 21,381,505.51 is: 32,072,258.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,234.27 : 118,333,851.71 = 21,381,505.51 : x
  2. Step 2: Convert to fraction form
    78,889,234.27/118,333,851.71 = 21,381,505.51/x
  3. Step 3: Cross multiply
    78,889,234.27x = 118,333,851.71 × 21,381,505.51
  4. Step 4: Simplify right side
    78,889,234.27x = 2,530,155,902,356,888
  5. Step 5: Solve for x
    x = 2,530,155,902,356,888/78,889,234.27
  6. Step 6: Final answer
    x = 32,072,258.35

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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.