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Finding the Fourth Proportional to 65,386.70, 97,820.85 and 56,717.90

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Solution

The fourth proportional to 65,386.70, 97,820.85 and 56,717.90 is: 84,852.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,386.70 : 97,820.85 = 56,717.90 : x
  2. Step 2: Convert to fraction form
    65,386.70/97,820.85 = 56,717.90/x
  3. Step 3: Cross multiply
    65,386.70x = 97,820.85 × 56,717.90
  4. Step 4: Simplify right side
    65,386.70x = 5,548,193,188.22
  5. Step 5: Solve for x
    x = 5,548,193,188.22/65,386.70
  6. Step 6: Final answer
    x = 84,852.01

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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.