Home / 78,988.98-118,470.63-26,398.38

Finding the Fourth Proportional to 78,988.98, 118,470.63 and 26,398.38

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Solution

The fourth proportional to 78,988.98, 118,470.63 and 26,398.38 is: 39,593.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,988.98 : 118,470.63 = 26,398.38 : x
  2. Step 2: Convert to fraction form
    78,988.98/118,470.63 = 26,398.38/x
  3. Step 3: Cross multiply
    78,988.98x = 118,470.63 × 26,398.38
  4. Step 4: Simplify right side
    78,988.98x = 3,127,432,709.58
  5. Step 5: Solve for x
    x = 3,127,432,709.58/78,988.98
  6. Step 6: Final answer
    x = 39,593.28

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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.