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Finding the Fourth Proportional to 72,973.80, 109,452.60 and 59,803.20

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Solution

The fourth proportional to 72,973.80, 109,452.60 and 59,803.20 is: 89,698.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,973.80 : 109,452.60 = 59,803.20 : x
  2. Step 2: Convert to fraction form
    72,973.80/109,452.60 = 59,803.20/x
  3. Step 3: Cross multiply
    72,973.80x = 109,452.60 × 59,803.20
  4. Step 4: Simplify right side
    72,973.80x = 6,545,615,728.32
  5. Step 5: Solve for x
    x = 6,545,615,728.32/72,973.80
  6. Step 6: Final answer
    x = 89,698.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.