Home / 72,335.04-99,828.90-40,072.74

Finding the Fourth Proportional to 72,335.04, 99,828.90 and 40,072.74

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Solution

The fourth proportional to 72,335.04, 99,828.90 and 40,072.74 is: 55,304.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,335.04 : 99,828.90 = 40,072.74 : x
  2. Step 2: Convert to fraction form
    72,335.04/99,828.90 = 40,072.74/x
  3. Step 3: Cross multiply
    72,335.04x = 99,828.90 × 40,072.74
  4. Step 4: Simplify right side
    72,335.04x = 4,000,417,554.19
  5. Step 5: Solve for x
    x = 4,000,417,554.19/72,335.04
  6. Step 6: Final answer
    x = 55,304.01

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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.