Home / 90,690.60-125,069.32-56,688.24

Finding the Fourth Proportional to 90,690.60, 125,069.32 and 56,688.24

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Solution

The fourth proportional to 90,690.60, 125,069.32 and 56,688.24 is: 78,177.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,690.60 : 125,069.32 = 56,688.24 : x
  2. Step 2: Convert to fraction form
    90,690.60/125,069.32 = 56,688.24/x
  3. Step 3: Cross multiply
    90,690.60x = 125,069.32 × 56,688.24
  4. Step 4: Simplify right side
    90,690.60x = 7,089,959,628.80
  5. Step 5: Solve for x
    x = 7,089,959,628.80/90,690.60
  6. Step 6: Final answer
    x = 78,177.45

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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.