Home / 74,776.48-103,328.40-71,131.84

Finding the Fourth Proportional to 74,776.48, 103,328.40 and 71,131.84

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Solution

The fourth proportional to 74,776.48, 103,328.40 and 71,131.84 is: 98,292.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,776.48 : 103,328.40 = 71,131.84 : x
  2. Step 2: Convert to fraction form
    74,776.48/103,328.40 = 71,131.84/x
  3. Step 3: Cross multiply
    74,776.48x = 103,328.40 × 71,131.84
  4. Step 4: Simplify right side
    74,776.48x = 7,349,939,216.26
  5. Step 5: Solve for x
    x = 7,349,939,216.26/74,776.48
  6. Step 6: Final answer
    x = 98,292.13

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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.