Home / 56,877.18-85,316.34-21,808.50

Finding the Fourth Proportional to 56,877.18, 85,316.34 and 21,808.50

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Solution

The fourth proportional to 56,877.18, 85,316.34 and 21,808.50 is: 32,712.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,877.18 : 85,316.34 = 21,808.50 : x
  2. Step 2: Convert to fraction form
    56,877.18/85,316.34 = 21,808.50/x
  3. Step 3: Cross multiply
    56,877.18x = 85,316.34 × 21,808.50
  4. Step 4: Simplify right side
    56,877.18x = 1,860,621,400.89
  5. Step 5: Solve for x
    x = 1,860,621,400.89/56,877.18
  6. Step 6: Final answer
    x = 32,712.97

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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.