Home / 72,260.84-99,720.06-40,430.36

Finding the Fourth Proportional to 72,260.84, 99,720.06 and 40,430.36

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Solution

The fourth proportional to 72,260.84, 99,720.06 and 40,430.36 is: 55,793.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,260.84 : 99,720.06 = 40,430.36 : x
  2. Step 2: Convert to fraction form
    72,260.84/99,720.06 = 40,430.36/x
  3. Step 3: Cross multiply
    72,260.84x = 99,720.06 × 40,430.36
  4. Step 4: Simplify right side
    72,260.84x = 4,031,717,925.02
  5. Step 5: Solve for x
    x = 4,031,717,925.02/72,260.84
  6. Step 6: Final answer
    x = 55,793.95

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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.