Home / 72,117.43-99,521.80-39,851.15

Finding the Fourth Proportional to 72,117.43, 99,521.80 and 39,851.15

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Solution

The fourth proportional to 72,117.43, 99,521.80 and 39,851.15 is: 54,994.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,117.43 : 99,521.80 = 39,851.15 : x
  2. Step 2: Convert to fraction form
    72,117.43/99,521.80 = 39,851.15/x
  3. Step 3: Cross multiply
    72,117.43x = 99,521.80 × 39,851.15
  4. Step 4: Simplify right side
    72,117.43x = 3,966,057,483.21
  5. Step 5: Solve for x
    x = 3,966,057,483.21/72,117.43
  6. Step 6: Final answer
    x = 54,994.44

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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.