Home / 78,767.19-118,166.16-25,472.40

Finding the Fourth Proportional to 78,767.19, 118,166.16 and 25,472.40

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Solution

The fourth proportional to 78,767.19, 118,166.16 and 25,472.40 is: 38,213.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,767.19 : 118,166.16 = 25,472.40 : x
  2. Step 2: Convert to fraction form
    78,767.19/118,166.16 = 25,472.40/x
  3. Step 3: Cross multiply
    78,767.19x = 118,166.16 × 25,472.40
  4. Step 4: Simplify right side
    78,767.19x = 3,009,975,693.98
  5. Step 5: Solve for x
    x = 3,009,975,693.98/78,767.19
  6. Step 6: Final answer
    x = 38,213.57

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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.