Home / 65,710.18-90,720.23-42,761.87

Finding the Fourth Proportional to 65,710.18, 90,720.23 and 42,761.87

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Solution

The fourth proportional to 65,710.18, 90,720.23 and 42,761.87 is: 59,037.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,710.18 : 90,720.23 = 42,761.87 : x
  2. Step 2: Convert to fraction form
    65,710.18/90,720.23 = 42,761.87/x
  3. Step 3: Cross multiply
    65,710.18x = 90,720.23 × 42,761.87
  4. Step 4: Simplify right side
    65,710.18x = 3,879,366,014.22
  5. Step 5: Solve for x
    x = 3,879,366,014.22/65,710.18
  6. Step 6: Final answer
    x = 59,037.52

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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.