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Finding the Fourth Proportional to 65,095.79, 97,642.60 and 20,721.89

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Solution

The fourth proportional to 65,095.79, 97,642.60 and 20,721.89 is: 31,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,095.79 : 97,642.60 = 20,721.89 : x
  2. Step 2: Convert to fraction form
    65,095.79/97,642.60 = 20,721.89/x
  3. Step 3: Cross multiply
    65,095.79x = 97,642.60 × 20,721.89
  4. Step 4: Simplify right side
    65,095.79x = 2,023,339,408.82
  5. Step 5: Solve for x
    x = 2,023,339,408.82/65,095.79
  6. Step 6: Final answer
    x = 31,082.49

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1.5x scale

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.