Home / 85,832,136.30-128,748,204.45-76,426,286.70

Finding the Fourth Proportional to 85,832,136.30, 128,748,204.45 and 76,426,286.70

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Solution

The fourth proportional to 85,832,136.30, 128,748,204.45 and 76,426,286.70 is: 114,639,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,832,136.30 : 128,748,204.45 = 76,426,286.70 : x
  2. Step 2: Convert to fraction form
    85,832,136.30/128,748,204.45 = 76,426,286.70/x
  3. Step 3: Cross multiply
    85,832,136.30x = 128,748,204.45 × 76,426,286.70
  4. Step 4: Simplify right side
    85,832,136.30x = 9,839,747,185,405,916
  5. Step 5: Solve for x
    x = 9,839,747,185,405,916/85,832,136.30
  6. Step 6: Final answer
    x = 114,639,430.05

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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.