Home / 93,471.36-128,985-51,021.36

Finding the Fourth Proportional to 93,471.36, 128,985 and 51,021.36

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Solution

The fourth proportional to 93,471.36, 128,985 and 51,021.36 is: 70,406.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,471.36 : 128,985 = 51,021.36 : x
  2. Step 2: Convert to fraction form
    93,471.36/128,985 = 51,021.36/x
  3. Step 3: Cross multiply
    93,471.36x = 128,985 × 51,021.36
  4. Step 4: Simplify right side
    93,471.36x = 6,580,990,119.60
  5. Step 5: Solve for x
    x = 6,580,990,119.60/93,471.36
  6. Step 6: Final answer
    x = 70,406.49

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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.