Home / 72,985.04-100,719.29-39,451.04

Finding the Fourth Proportional to 72,985.04, 100,719.29 and 39,451.04

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Solution

The fourth proportional to 72,985.04, 100,719.29 and 39,451.04 is: 54,442.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,985.04 : 100,719.29 = 39,451.04 : x
  2. Step 2: Convert to fraction form
    72,985.04/100,719.29 = 39,451.04/x
  3. Step 3: Cross multiply
    72,985.04x = 100,719.29 × 39,451.04
  4. Step 4: Simplify right side
    72,985.04x = 3,973,480,037.71
  5. Step 5: Solve for x
    x = 3,973,480,037.71/72,985.04
  6. Step 6: Final answer
    x = 54,442.39

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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.