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Finding the Fourth Proportional to 72,395.04, 99,851.76 and 45,516

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Solution

The fourth proportional to 72,395.04, 99,851.76 and 45,516 is: 62,778.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,395.04 : 99,851.76 = 45,516 : x
  2. Step 2: Convert to fraction form
    72,395.04/99,851.76 = 45,516/x
  3. Step 3: Cross multiply
    72,395.04x = 99,851.76 × 45,516
  4. Step 4: Simplify right side
    72,395.04x = 4,544,852,708.16
  5. Step 5: Solve for x
    x = 4,544,852,708.16/72,395.04
  6. Step 6: Final answer
    x = 62,778.51

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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.