Home / 87,060.18-130,415.28-45,419.70

Finding the Fourth Proportional to 87,060.18, 130,415.28 and 45,419.70

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Solution

The fourth proportional to 87,060.18, 130,415.28 and 45,419.70 is: 68,038.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,060.18 : 130,415.28 = 45,419.70 : x
  2. Step 2: Convert to fraction form
    87,060.18/130,415.28 = 45,419.70/x
  3. Step 3: Cross multiply
    87,060.18x = 130,415.28 × 45,419.70
  4. Step 4: Simplify right side
    87,060.18x = 5,923,422,893.02
  5. Step 5: Solve for x
    x = 5,923,422,893.02/87,060.18
  6. Step 6: Final answer
    x = 68,038.26

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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.