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Finding the Fourth Proportional to 72,973.90, 109,247.58 and 65,970.02

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Solution

The fourth proportional to 72,973.90, 109,247.58 and 65,970.02 is: 98,762.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,973.90 : 109,247.58 = 65,970.02 : x
  2. Step 2: Convert to fraction form
    72,973.90/109,247.58 = 65,970.02/x
  3. Step 3: Cross multiply
    72,973.90x = 109,247.58 × 65,970.02
  4. Step 4: Simplify right side
    72,973.90x = 7,207,065,037.55
  5. Step 5: Solve for x
    x = 7,207,065,037.55/72,973.90
  6. Step 6: Final answer
    x = 98,762.23

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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.