Home / 78,989.02-109,024.44-45,017.66

Finding the Fourth Proportional to 78,989.02, 109,024.44 and 45,017.66

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Solution

The fourth proportional to 78,989.02, 109,024.44 and 45,017.66 is: 62,135.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,989.02 : 109,024.44 = 45,017.66 : x
  2. Step 2: Convert to fraction form
    78,989.02/109,024.44 = 45,017.66/x
  3. Step 3: Cross multiply
    78,989.02x = 109,024.44 × 45,017.66
  4. Step 4: Simplify right side
    78,989.02x = 4,908,024,401.40
  5. Step 5: Solve for x
    x = 4,908,024,401.40/78,989.02
  6. Step 6: Final answer
    x = 62,135.53

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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.