Home / 78,032.08-107,655.28-51,189.52

Finding the Fourth Proportional to 78,032.08, 107,655.28 and 51,189.52

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Solution

The fourth proportional to 78,032.08, 107,655.28 and 51,189.52 is: 70,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,032.08 : 107,655.28 = 51,189.52 : x
  2. Step 2: Convert to fraction form
    78,032.08/107,655.28 = 51,189.52/x
  3. Step 3: Cross multiply
    78,032.08x = 107,655.28 × 51,189.52
  4. Step 4: Simplify right side
    78,032.08x = 5,510,822,108.67
  5. Step 5: Solve for x
    x = 5,510,822,108.67/78,032.08
  6. Step 6: Final answer
    x = 70,622.52

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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.