Home / 56,109.28-77,430.64-30,958.80

Finding the Fourth Proportional to 56,109.28, 77,430.64 and 30,958.80

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Solution

The fourth proportional to 56,109.28, 77,430.64 and 30,958.80 is: 42,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,109.28 : 77,430.64 = 30,958.80 : x
  2. Step 2: Convert to fraction form
    56,109.28/77,430.64 = 30,958.80/x
  3. Step 3: Cross multiply
    56,109.28x = 77,430.64 × 30,958.80
  4. Step 4: Simplify right side
    56,109.28x = 2,397,159,697.63
  5. Step 5: Solve for x
    x = 2,397,159,697.63/56,109.28
  6. Step 6: Final answer
    x = 42,723.05

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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.