Home / 85,420,311.76-128,146,952.76-27,897,118.48

Finding the Fourth Proportional to 85,420,311.76, 128,146,952.76 and 27,897,118.48

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Solution

The fourth proportional to 85,420,311.76, 128,146,952.76 and 27,897,118.48 is: 41,851,061.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,420,311.76 : 128,146,952.76 = 27,897,118.48 : x
  2. Step 2: Convert to fraction form
    85,420,311.76/128,146,952.76 = 27,897,118.48/x
  3. Step 3: Cross multiply
    85,420,311.76x = 128,146,952.76 × 27,897,118.48
  4. Step 4: Simplify right side
    85,420,311.76x = 3,574,930,723,996,683
  5. Step 5: Solve for x
    x = 3,574,930,723,996,683/85,420,311.76
  6. Step 6: Final answer
    x = 41,851,061.54

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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.