Home / 65,320.40-97,761.90-57,447.20

Finding the Fourth Proportional to 65,320.40, 97,761.90 and 57,447.20

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Solution

The fourth proportional to 65,320.40, 97,761.90 and 57,447.20 is: 85,978.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,320.40 : 97,761.90 = 57,447.20 : x
  2. Step 2: Convert to fraction form
    65,320.40/97,761.90 = 57,447.20/x
  3. Step 3: Cross multiply
    65,320.40x = 97,761.90 × 57,447.20
  4. Step 4: Simplify right side
    65,320.40x = 5,616,147,421.68
  5. Step 5: Solve for x
    x = 5,616,147,421.68/65,320.40
  6. Step 6: Final answer
    x = 85,978.46

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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.