Home / 90,871,043.40-136,306,565.10-54,591,337.80

Finding the Fourth Proportional to 90,871,043.40, 136,306,565.10 and 54,591,337.80

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Solution

The fourth proportional to 90,871,043.40, 136,306,565.10 and 54,591,337.80 is: 81,887,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871,043.40 : 136,306,565.10 = 54,591,337.80 : x
  2. Step 2: Convert to fraction form
    90,871,043.40/136,306,565.10 = 54,591,337.80/x
  3. Step 3: Cross multiply
    90,871,043.40x = 136,306,565.10 × 54,591,337.80
  4. Step 4: Simplify right side
    90,871,043.40x = 7,441,157,739,731,790
  5. Step 5: Solve for x
    x = 7,441,157,739,731,790/90,871,043.40
  6. Step 6: Final answer
    x = 81,887,006.70

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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.