Home / 105,477.47-145,558.37-57,079.36

Finding the Fourth Proportional to 105,477.47, 145,558.37 and 57,079.36

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Solution

The fourth proportional to 105,477.47, 145,558.37 and 57,079.36 is: 78,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,477.47 : 145,558.37 = 57,079.36 : x
  2. Step 2: Convert to fraction form
    105,477.47/145,558.37 = 57,079.36/x
  3. Step 3: Cross multiply
    105,477.47x = 145,558.37 × 57,079.36
  4. Step 4: Simplify right side
    105,477.47x = 8,308,378,381.05
  5. Step 5: Solve for x
    x = 8,308,378,381.05/105,477.47
  6. Step 6: Final answer
    x = 78,769.23

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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.