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Finding the Fourth Proportional to 65,457.96, 90,327.66 and 38,599.20

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Solution

The fourth proportional to 65,457.96, 90,327.66 and 38,599.20 is: 53,264.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,457.96 : 90,327.66 = 38,599.20 : x
  2. Step 2: Convert to fraction form
    65,457.96/90,327.66 = 38,599.20/x
  3. Step 3: Cross multiply
    65,457.96x = 90,327.66 × 38,599.20
  4. Step 4: Simplify right side
    65,457.96x = 3,486,575,413.87
  5. Step 5: Solve for x
    x = 3,486,575,413.87/65,457.96
  6. Step 6: Final answer
    x = 53,264.35

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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.