Home / 72,569.40-100,325.43-71,904.39

Finding the Fourth Proportional to 72,569.40, 100,325.43 and 71,904.39

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Solution

The fourth proportional to 72,569.40, 100,325.43 and 71,904.39 is: 99,406.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,569.40 : 100,325.43 = 71,904.39 : x
  2. Step 2: Convert to fraction form
    72,569.40/100,325.43 = 71,904.39/x
  3. Step 3: Cross multiply
    72,569.40x = 100,325.43 × 71,904.39
  4. Step 4: Simplify right side
    72,569.40x = 7,213,838,845.64
  5. Step 5: Solve for x
    x = 7,213,838,845.64/72,569.40
  6. Step 6: Final answer
    x = 99,406.07

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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.