Home / 78,470.05-117,705.08-48,508.15

Finding the Fourth Proportional to 78,470.05, 117,705.08 and 48,508.15

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Solution

The fourth proportional to 78,470.05, 117,705.08 and 48,508.15 is: 72,762.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,470.05 : 117,705.08 = 48,508.15 : x
  2. Step 2: Convert to fraction form
    78,470.05/117,705.08 = 48,508.15/x
  3. Step 3: Cross multiply
    78,470.05x = 117,705.08 × 48,508.15
  4. Step 4: Simplify right side
    78,470.05x = 5,709,655,433.86
  5. Step 5: Solve for x
    x = 5,709,655,433.86/78,470.05
  6. Step 6: Final answer
    x = 72,762.23

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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.