Home / 72,513.33-100,065.69-40,683.98

Finding the Fourth Proportional to 72,513.33, 100,065.69 and 40,683.98

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Solution

The fourth proportional to 72,513.33, 100,065.69 and 40,683.98 is: 56,142.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,513.33 : 100,065.69 = 40,683.98 : x
  2. Step 2: Convert to fraction form
    72,513.33/100,065.69 = 40,683.98/x
  3. Step 3: Cross multiply
    72,513.33x = 100,065.69 × 40,683.98
  4. Step 4: Simplify right side
    72,513.33x = 4,071,070,030.32
  5. Step 5: Solve for x
    x = 4,071,070,030.32/72,513.33
  6. Step 6: Final answer
    x = 56,142.37

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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.