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Finding the Fourth Proportional to 56,480.76, 77,920.11 and 32,590.49

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Solution

The fourth proportional to 56,480.76, 77,920.11 and 32,590.49 is: 44,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,480.76 : 77,920.11 = 32,590.49 : x
  2. Step 2: Convert to fraction form
    56,480.76/77,920.11 = 32,590.49/x
  3. Step 3: Cross multiply
    56,480.76x = 77,920.11 × 32,590.49
  4. Step 4: Simplify right side
    56,480.76x = 2,539,454,176.15
  5. Step 5: Solve for x
    x = 2,539,454,176.15/56,480.76
  6. Step 6: Final answer
    x = 44,961.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.