Home / 90,856,679.40-136,285,019.10-54,576,973.80

Finding the Fourth Proportional to 90,856,679.40, 136,285,019.10 and 54,576,973.80

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Solution

The fourth proportional to 90,856,679.40, 136,285,019.10 and 54,576,973.80 is: 81,865,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,856,679.40 : 136,285,019.10 = 54,576,973.80 : x
  2. Step 2: Convert to fraction form
    90,856,679.40/136,285,019.10 = 54,576,973.80/x
  3. Step 3: Cross multiply
    90,856,679.40x = 136,285,019.10 × 54,576,973.80
  4. Step 4: Simplify right side
    90,856,679.40x = 7,438,023,916,753,199
  5. Step 5: Solve for x
    x = 7,438,023,916,753,199/90,856,679.40
  6. Step 6: Final answer
    x = 81,865,460.70

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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.