Home / 78,024.13-117,008.50-28,090.81

Finding the Fourth Proportional to 78,024.13, 117,008.50 and 28,090.81

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Solution

The fourth proportional to 78,024.13, 117,008.50 and 28,090.81 is: 42,126.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,024.13 : 117,008.50 = 28,090.81 : x
  2. Step 2: Convert to fraction form
    78,024.13/117,008.50 = 28,090.81/x
  3. Step 3: Cross multiply
    78,024.13x = 117,008.50 × 28,090.81
  4. Step 4: Simplify right side
    78,024.13x = 3,286,863,541.89
  5. Step 5: Solve for x
    x = 3,286,863,541.89/78,024.13
  6. Step 6: Final answer
    x = 42,126.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.