Home / 72,756.36-100,402.65-40,925.28

Finding the Fourth Proportional to 72,756.36, 100,402.65 and 40,925.28

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Solution

The fourth proportional to 72,756.36, 100,402.65 and 40,925.28 is: 56,476.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,756.36 : 100,402.65 = 40,925.28 : x
  2. Step 2: Convert to fraction form
    72,756.36/100,402.65 = 40,925.28/x
  3. Step 3: Cross multiply
    72,756.36x = 100,402.65 × 40,925.28
  4. Step 4: Simplify right side
    72,756.36x = 4,109,006,563.99
  5. Step 5: Solve for x
    x = 4,109,006,563.99/72,756.36
  6. Step 6: Final answer
    x = 56,476.25

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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.