Home / 72,160.88-99,582.65-39,895.00

Finding the Fourth Proportional to 72,160.88, 99,582.65 and 39,895.00

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Solution

The fourth proportional to 72,160.88, 99,582.65 and 39,895.00 is: 55,055.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,160.88 : 99,582.65 = 39,895.00 : x
  2. Step 2: Convert to fraction form
    72,160.88/99,582.65 = 39,895.00/x
  3. Step 3: Cross multiply
    72,160.88x = 99,582.65 × 39,895.00
  4. Step 4: Simplify right side
    72,160.88x = 3,972,849,522.92
  5. Step 5: Solve for x
    x = 3,972,849,522.92/72,160.88
  6. Step 6: Final answer
    x = 55,055.45

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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.