Home / 72,166.39-99,588.95-39,903.24

Finding the Fourth Proportional to 72,166.39, 99,588.95 and 39,903.24

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Solution

The fourth proportional to 72,166.39, 99,588.95 and 39,903.24 is: 55,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,166.39 : 99,588.95 = 39,903.24 : x
  2. Step 2: Convert to fraction form
    72,166.39/99,588.95 = 39,903.24/x
  3. Step 3: Cross multiply
    72,166.39x = 99,588.95 × 39,903.24
  4. Step 4: Simplify right side
    72,166.39x = 3,973,921,773.20
  5. Step 5: Solve for x
    x = 3,973,921,773.20/72,166.39
  6. Step 6: Final answer
    x = 55,066.10

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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.