Home / 81,435.02-112,384.94-45,636.56

Finding the Fourth Proportional to 81,435.02, 112,384.94 and 45,636.56

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Solution

The fourth proportional to 81,435.02, 112,384.94 and 45,636.56 is: 62,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,435.02 : 112,384.94 = 45,636.56 : x
  2. Step 2: Convert to fraction form
    81,435.02/112,384.94 = 45,636.56/x
  3. Step 3: Cross multiply
    81,435.02x = 112,384.94 × 45,636.56
  4. Step 4: Simplify right side
    81,435.02x = 5,128,862,057.41
  5. Step 5: Solve for x
    x = 5,128,862,057.41/81,435.02
  6. Step 6: Final answer
    x = 62,981.04

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1.5x scale

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.