Home / 65,735.40-98,603.10-42,115.80

Finding the Fourth Proportional to 65,735.40, 98,603.10 and 42,115.80

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Solution

The fourth proportional to 65,735.40, 98,603.10 and 42,115.80 is: 63,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,735.40 : 98,603.10 = 42,115.80 : x
  2. Step 2: Convert to fraction form
    65,735.40/98,603.10 = 42,115.80/x
  3. Step 3: Cross multiply
    65,735.40x = 98,603.10 × 42,115.80
  4. Step 4: Simplify right side
    65,735.40x = 4,152,748,438.98
  5. Step 5: Solve for x
    x = 4,152,748,438.98/65,735.40
  6. Step 6: Final answer
    x = 63,173.70

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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.