Home / 72,416.08-99,933.96-42,219.28

Finding the Fourth Proportional to 72,416.08, 99,933.96 and 42,219.28

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Solution

The fourth proportional to 72,416.08, 99,933.96 and 42,219.28 is: 58,262.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,416.08 : 99,933.96 = 42,219.28 : x
  2. Step 2: Convert to fraction form
    72,416.08/99,933.96 = 42,219.28/x
  3. Step 3: Cross multiply
    72,416.08x = 99,933.96 × 42,219.28
  4. Step 4: Simplify right side
    72,416.08x = 4,219,139,838.75
  5. Step 5: Solve for x
    x = 4,219,139,838.75/72,416.08
  6. Step 6: Final answer
    x = 58,262.47

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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.