Home / 78,889,235.90-118,333,854.15-21,381,507.14

Finding the Fourth Proportional to 78,889,235.90, 118,333,854.15 and 21,381,507.14

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Solution

The fourth proportional to 78,889,235.90, 118,333,854.15 and 21,381,507.14 is: 32,072,260.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,235.90 : 118,333,854.15 = 21,381,507.14 : x
  2. Step 2: Convert to fraction form
    78,889,235.90/118,333,854.15 = 21,381,507.14/x
  3. Step 3: Cross multiply
    78,889,235.90x = 118,333,854.15 × 21,381,507.14
  4. Step 4: Simplify right side
    78,889,235.90x = 2,530,156,147,411,944
  5. Step 5: Solve for x
    x = 2,530,156,147,411,944/78,889,235.90
  6. Step 6: Final answer
    x = 32,072,260.79

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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.