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Finding the Fourth Proportional to 65,750.96, 90,776.48 and 42,802.64

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Solution

The fourth proportional to 65,750.96, 90,776.48 and 42,802.64 is: 59,093.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,750.96 : 90,776.48 = 42,802.64 : x
  2. Step 2: Convert to fraction form
    65,750.96/90,776.48 = 42,802.64/x
  3. Step 3: Cross multiply
    65,750.96x = 90,776.48 × 42,802.64
  4. Step 4: Simplify right side
    65,750.96x = 3,885,472,993.91
  5. Step 5: Solve for x
    x = 3,885,472,993.91/65,750.96
  6. Step 6: Final answer
    x = 59,093.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.