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Finding the Fourth Proportional to 65,720.20, 98,726.10 and 63,063.40

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Solution

The fourth proportional to 65,720.20, 98,726.10 and 63,063.40 is: 94,735.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,720.20 : 98,726.10 = 63,063.40 : x
  2. Step 2: Convert to fraction form
    65,720.20/98,726.10 = 63,063.40/x
  3. Step 3: Cross multiply
    65,720.20x = 98,726.10 × 63,063.40
  4. Step 4: Simplify right side
    65,720.20x = 6,226,003,534.74
  5. Step 5: Solve for x
    x = 6,226,003,534.74/65,720.20
  6. Step 6: Final answer
    x = 94,735.01

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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.