Home / 105,475.21-145,555.27-57,077.10

Finding the Fourth Proportional to 105,475.21, 145,555.27 and 57,077.10

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Solution

The fourth proportional to 105,475.21, 145,555.27 and 57,077.10 is: 78,766.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,475.21 : 145,555.27 = 57,077.10 : x
  2. Step 2: Convert to fraction form
    105,475.21/145,555.27 = 57,077.10/x
  3. Step 3: Cross multiply
    105,475.21x = 145,555.27 × 57,077.10
  4. Step 4: Simplify right side
    105,475.21x = 8,307,872,558.62
  5. Step 5: Solve for x
    x = 8,307,872,558.62/105,475.21
  6. Step 6: Final answer
    x = 78,766.12

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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.