Home / 102,820.50-141,886.41-56,877.41

Finding the Fourth Proportional to 102,820.50, 141,886.41 and 56,877.41

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Solution

The fourth proportional to 102,820.50, 141,886.41 and 56,877.41 is: 78,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,820.50 : 141,886.41 = 56,877.41 : x
  2. Step 2: Convert to fraction form
    102,820.50/141,886.41 = 56,877.41/x
  3. Step 3: Cross multiply
    102,820.50x = 141,886.41 × 56,877.41
  4. Step 4: Simplify right side
    102,820.50x = 8,070,130,521.18
  5. Step 5: Solve for x
    x = 8,070,130,521.18/102,820.50
  6. Step 6: Final answer
    x = 78,487.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.