Home / 72,278.55-99,674.42-56,357.19

Finding the Fourth Proportional to 72,278.55, 99,674.42 and 56,357.19

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Solution

The fourth proportional to 72,278.55, 99,674.42 and 56,357.19 is: 77,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,278.55 : 99,674.42 = 56,357.19 : x
  2. Step 2: Convert to fraction form
    72,278.55/99,674.42 = 56,357.19/x
  3. Step 3: Cross multiply
    72,278.55x = 99,674.42 × 56,357.19
  4. Step 4: Simplify right side
    72,278.55x = 5,617,369,944.29
  5. Step 5: Solve for x
    x = 5,617,369,944.29/72,278.55
  6. Step 6: Final answer
    x = 77,718.35

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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.