Home / 78,885,159.84-118,327,741.92-21,377,428.92

Finding the Fourth Proportional to 78,885,159.84, 118,327,741.92 and 21,377,428.92

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Solution

The fourth proportional to 78,885,159.84, 118,327,741.92 and 21,377,428.92 is: 32,066,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,885,159.84 : 118,327,741.92 = 21,377,428.92 : x
  2. Step 2: Convert to fraction form
    78,885,159.84/118,327,741.92 = 21,377,428.92/x
  3. Step 3: Cross multiply
    78,885,159.84x = 118,327,741.92 × 21,377,428.92
  4. Step 4: Simplify right side
    78,885,159.84x = 2,529,542,892,158,904.50
  5. Step 5: Solve for x
    x = 2,529,542,892,158,904.50/78,885,159.84
  6. Step 6: Final answer
    x = 32,066,143.97

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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.