Home / 72,148.30-99,564.42-40,317.19

Finding the Fourth Proportional to 72,148.30, 99,564.42 and 40,317.19

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Solution

The fourth proportional to 72,148.30, 99,564.42 and 40,317.19 is: 55,637.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.30 : 99,564.42 = 40,317.19 : x
  2. Step 2: Convert to fraction form
    72,148.30/99,564.42 = 40,317.19/x
  3. Step 3: Cross multiply
    72,148.30x = 99,564.42 × 40,317.19
  4. Step 4: Simplify right side
    72,148.30x = 4,014,157,638.38
  5. Step 5: Solve for x
    x = 4,014,157,638.38/72,148.30
  6. Step 6: Final answer
    x = 55,637.59

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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.