Home / 105,436.70-145,502.55-57,690.24

Finding the Fourth Proportional to 105,436.70, 145,502.55 and 57,690.24

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Solution

The fourth proportional to 105,436.70, 145,502.55 and 57,690.24 is: 79,612.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,436.70 : 145,502.55 = 57,690.24 : x
  2. Step 2: Convert to fraction form
    105,436.70/145,502.55 = 57,690.24/x
  3. Step 3: Cross multiply
    105,436.70x = 145,502.55 × 57,690.24
  4. Step 4: Simplify right side
    105,436.70x = 8,394,077,030.11
  5. Step 5: Solve for x
    x = 8,394,077,030.11/105,436.70
  6. Step 6: Final answer
    x = 79,612.48

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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.