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Finding the Fourth Proportional to 65,135.70, 97,703.55 and 38,454.30

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Solution

The fourth proportional to 65,135.70, 97,703.55 and 38,454.30 is: 57,681.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,135.70 : 97,703.55 = 38,454.30 : x
  2. Step 2: Convert to fraction form
    65,135.70/97,703.55 = 38,454.30/x
  3. Step 3: Cross multiply
    65,135.70x = 97,703.55 × 38,454.30
  4. Step 4: Simplify right side
    65,135.70x = 3,757,121,622.77
  5. Step 5: Solve for x
    x = 3,757,121,622.77/65,135.70
  6. Step 6: Final answer
    x = 57,681.45

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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.