Home / 105,434.70-145,499.79-57,688.24

Finding the Fourth Proportional to 105,434.70, 145,499.79 and 57,688.24

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Solution

The fourth proportional to 105,434.70, 145,499.79 and 57,688.24 is: 79,609.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,434.70 : 145,499.79 = 57,688.24 : x
  2. Step 2: Convert to fraction form
    105,434.70/145,499.79 = 57,688.24/x
  3. Step 3: Cross multiply
    105,434.70x = 145,499.79 × 57,688.24
  4. Step 4: Simplify right side
    105,434.70x = 8,393,626,805.47
  5. Step 5: Solve for x
    x = 8,393,626,805.47/105,434.70
  6. Step 6: Final answer
    x = 79,609.72

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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.