Home / 72,078.03-99,403.16-45,223.47

Finding the Fourth Proportional to 72,078.03, 99,403.16 and 45,223.47

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Solution

The fourth proportional to 72,078.03, 99,403.16 and 45,223.47 is: 62,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,078.03 : 99,403.16 = 45,223.47 : x
  2. Step 2: Convert to fraction form
    72,078.03/99,403.16 = 45,223.47/x
  3. Step 3: Cross multiply
    72,078.03x = 99,403.16 × 45,223.47
  4. Step 4: Simplify right side
    72,078.03x = 4,495,355,598.05
  5. Step 5: Solve for x
    x = 4,495,355,598.05/72,078.03
  6. Step 6: Final answer
    x = 62,367.90

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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.