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Finding the Fourth Proportional to 78,492.86, 108,316.85 and 44,503.63

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Solution

The fourth proportional to 78,492.86, 108,316.85 and 44,503.63 is: 61,413.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,492.86 : 108,316.85 = 44,503.63 : x
  2. Step 2: Convert to fraction form
    78,492.86/108,316.85 = 44,503.63/x
  3. Step 3: Cross multiply
    78,492.86x = 108,316.85 × 44,503.63
  4. Step 4: Simplify right side
    78,492.86x = 4,820,493,015.17
  5. Step 5: Solve for x
    x = 4,820,493,015.17/78,492.86
  6. Step 6: Final answer
    x = 61,413.14

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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.