Home / 81,655.47-122,368.33-64,941.32

Finding the Fourth Proportional to 81,655.47, 122,368.33 and 64,941.32

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Solution

The fourth proportional to 81,655.47, 122,368.33 and 64,941.32 is: 97,320.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,655.47 : 122,368.33 = 64,941.32 : x
  2. Step 2: Convert to fraction form
    81,655.47/122,368.33 = 64,941.32/x
  3. Step 3: Cross multiply
    81,655.47x = 122,368.33 × 64,941.32
  4. Step 4: Simplify right side
    81,655.47x = 7,946,761,019.96
  5. Step 5: Solve for x
    x = 7,946,761,019.96/81,655.47
  6. Step 6: Final answer
    x = 97,320.62

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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.