Home / 72,416.45-99,933.19-39,710.40

Finding the Fourth Proportional to 72,416.45, 99,933.19 and 39,710.40

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Solution

The fourth proportional to 72,416.45, 99,933.19 and 39,710.40 is: 54,799.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,416.45 : 99,933.19 = 39,710.40 : x
  2. Step 2: Convert to fraction form
    72,416.45/99,933.19 = 39,710.40/x
  3. Step 3: Cross multiply
    72,416.45x = 99,933.19 × 39,710.40
  4. Step 4: Simplify right side
    72,416.45x = 3,968,386,848.90
  5. Step 5: Solve for x
    x = 3,968,386,848.90/72,416.45
  6. Step 6: Final answer
    x = 54,799.53

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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.