Home / 78,740.10-118,122.04-25,414.25

Finding the Fourth Proportional to 78,740.10, 118,122.04 and 25,414.25

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Solution

The fourth proportional to 78,740.10, 118,122.04 and 25,414.25 is: 38,125.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,740.10 : 118,122.04 = 25,414.25 : x
  2. Step 2: Convert to fraction form
    78,740.10/118,122.04 = 25,414.25/x
  3. Step 3: Cross multiply
    78,740.10x = 118,122.04 × 25,414.25
  4. Step 4: Simplify right side
    78,740.10x = 3,001,983,055.07
  5. Step 5: Solve for x
    x = 3,001,983,055.07/78,740.10
  6. Step 6: Final answer
    x = 38,125.22

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1.5x scale

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.