Home / 72,346.08-99,835.29-40,079.40

Finding the Fourth Proportional to 72,346.08, 99,835.29 and 40,079.40

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Solution

The fourth proportional to 72,346.08, 99,835.29 and 40,079.40 is: 55,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,346.08 : 99,835.29 = 40,079.40 : x
  2. Step 2: Convert to fraction form
    72,346.08/99,835.29 = 40,079.40/x
  3. Step 3: Cross multiply
    72,346.08x = 99,835.29 × 40,079.40
  4. Step 4: Simplify right side
    72,346.08x = 4,001,338,522.03
  5. Step 5: Solve for x
    x = 4,001,338,522.03/72,346.08
  6. Step 6: Final answer
    x = 55,308.30

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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.