Home / 105,397.35-145,449.48-57,649.65

Finding the Fourth Proportional to 105,397.35, 145,449.48 and 57,649.65

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Solution

The fourth proportional to 105,397.35, 145,449.48 and 57,649.65 is: 79,557.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,397.35 : 145,449.48 = 57,649.65 : x
  2. Step 2: Convert to fraction form
    105,397.35/145,449.48 = 57,649.65/x
  3. Step 3: Cross multiply
    105,397.35x = 145,449.48 × 57,649.65
  4. Step 4: Simplify right side
    105,397.35x = 8,385,111,614.68
  5. Step 5: Solve for x
    x = 8,385,111,614.68/105,397.35
  6. Step 6: Final answer
    x = 79,557.14

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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.