Home / 78,312.30-117,468.45-45,015.23

Finding the Fourth Proportional to 78,312.30, 117,468.45 and 45,015.23

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Solution

The fourth proportional to 78,312.30, 117,468.45 and 45,015.23 is: 67,522.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312.30 : 117,468.45 = 45,015.23 : x
  2. Step 2: Convert to fraction form
    78,312.30/117,468.45 = 45,015.23/x
  3. Step 3: Cross multiply
    78,312.30x = 117,468.45 × 45,015.23
  4. Step 4: Simplify right side
    78,312.30x = 5,287,868,707.15
  5. Step 5: Solve for x
    x = 5,287,868,707.15/78,312.30
  6. Step 6: Final answer
    x = 67,522.84

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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.