Home / 56,108.60-77,430.13-30,958.10

Finding the Fourth Proportional to 56,108.60, 77,430.13 and 30,958.10

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Solution

The fourth proportional to 56,108.60, 77,430.13 and 30,958.10 is: 42,722.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,108.60 : 77,430.13 = 30,958.10 : x
  2. Step 2: Convert to fraction form
    56,108.60/77,430.13 = 30,958.10/x
  3. Step 3: Cross multiply
    56,108.60x = 77,430.13 × 30,958.10
  4. Step 4: Simplify right side
    56,108.60x = 2,397,089,243.01
  5. Step 5: Solve for x
    x = 2,397,089,243.01/56,108.60
  6. Step 6: Final answer
    x = 42,722.32

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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.