Home / 105,477.12-145,558.80-57,079.04

Finding the Fourth Proportional to 105,477.12, 145,558.80 and 57,079.04

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Solution

The fourth proportional to 105,477.12, 145,558.80 and 57,079.04 is: 78,769.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,477.12 : 145,558.80 = 57,079.04 : x
  2. Step 2: Convert to fraction form
    105,477.12/145,558.80 = 57,079.04/x
  3. Step 3: Cross multiply
    105,477.12x = 145,558.80 × 57,079.04
  4. Step 4: Simplify right side
    105,477.12x = 8,308,356,567.55
  5. Step 5: Solve for x
    x = 8,308,356,567.55/105,477.12
  6. Step 6: Final answer
    x = 78,769.28

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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.