Home / 72,135.04-99,557.60-43,830.40

Finding the Fourth Proportional to 72,135.04, 99,557.60 and 43,830.40

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Solution

The fourth proportional to 72,135.04, 99,557.60 and 43,830.40 is: 60,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135.04 : 99,557.60 = 43,830.40 : x
  2. Step 2: Convert to fraction form
    72,135.04/99,557.60 = 43,830.40/x
  3. Step 3: Cross multiply
    72,135.04x = 99,557.60 × 43,830.40
  4. Step 4: Simplify right side
    72,135.04x = 4,363,649,431.04
  5. Step 5: Solve for x
    x = 4,363,649,431.04/72,135.04
  6. Step 6: Final answer
    x = 60,492.78

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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.