Home / 78,894,667.69-118,342,001.54-21,385,444.18

Finding the Fourth Proportional to 78,894,667.69, 118,342,001.54 and 21,385,444.18

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Solution

The fourth proportional to 78,894,667.69, 118,342,001.54 and 21,385,444.18 is: 32,078,166.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,667.69 : 118,342,001.54 = 21,385,444.18 : x
  2. Step 2: Convert to fraction form
    78,894,667.69/118,342,001.54 = 21,385,444.18/x
  3. Step 3: Cross multiply
    78,894,667.69x = 118,342,001.54 × 21,385,444.18
  4. Step 4: Simplify right side
    78,894,667.69x = 2,530,796,268,002,551
  5. Step 5: Solve for x
    x = 2,530,796,268,002,551/78,894,667.69
  6. Step 6: Final answer
    x = 32,078,166.27

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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.