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Finding the Fourth Proportional to 65,117.60, 97,676.40 and 53,307.80

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Solution

The fourth proportional to 65,117.60, 97,676.40 and 53,307.80 is: 79,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,117.60 : 97,676.40 = 53,307.80 : x
  2. Step 2: Convert to fraction form
    65,117.60/97,676.40 = 53,307.80/x
  3. Step 3: Cross multiply
    65,117.60x = 97,676.40 × 53,307.80
  4. Step 4: Simplify right side
    65,117.60x = 5,206,913,995.92
  5. Step 5: Solve for x
    x = 5,206,913,995.92/65,117.60
  6. Step 6: Final answer
    x = 79,961.70

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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.