Home / 65,487.42-90,365.63-43,972.81

Finding the Fourth Proportional to 65,487.42, 90,365.63 and 43,972.81

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Solution

The fourth proportional to 65,487.42, 90,365.63 and 43,972.81 is: 60,677.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,487.42 : 90,365.63 = 43,972.81 : x
  2. Step 2: Convert to fraction form
    65,487.42/90,365.63 = 43,972.81/x
  3. Step 3: Cross multiply
    65,487.42x = 90,365.63 × 43,972.81
  4. Step 4: Simplify right side
    65,487.42x = 3,973,630,232.74
  5. Step 5: Solve for x
    x = 3,973,630,232.74/65,487.42
  6. Step 6: Final answer
    x = 60,677.76

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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.