Home / 76,792.02-105,981.64-42,803.60

Finding the Fourth Proportional to 76,792.02, 105,981.64 and 42,803.60

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Solution

The fourth proportional to 76,792.02, 105,981.64 and 42,803.60 is: 59,073.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,792.02 : 105,981.64 = 42,803.60 : x
  2. Step 2: Convert to fraction form
    76,792.02/105,981.64 = 42,803.60/x
  3. Step 3: Cross multiply
    76,792.02x = 105,981.64 × 42,803.60
  4. Step 4: Simplify right side
    76,792.02x = 4,536,395,725.90
  5. Step 5: Solve for x
    x = 4,536,395,725.90/76,792.02
  6. Step 6: Final answer
    x = 59,073.79

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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.