Home / 93,157.25-128,589.41-55,430.69

Finding the Fourth Proportional to 93,157.25, 128,589.41 and 55,430.69

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Solution

The fourth proportional to 93,157.25, 128,589.41 and 55,430.69 is: 76,513.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,157.25 : 128,589.41 = 55,430.69 : x
  2. Step 2: Convert to fraction form
    93,157.25/128,589.41 = 55,430.69/x
  3. Step 3: Cross multiply
    93,157.25x = 128,589.41 × 55,430.69
  4. Step 4: Simplify right side
    93,157.25x = 7,127,799,445.84
  5. Step 5: Solve for x
    x = 7,127,799,445.84/93,157.25
  6. Step 6: Final answer
    x = 76,513.63

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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.