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Finding the Fourth Proportional to 79,500.75, 109,710.68 and 45,509.10

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Solution

The fourth proportional to 79,500.75, 109,710.68 and 45,509.10 is: 62,802.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,500.75 : 109,710.68 = 45,509.10 : x
  2. Step 2: Convert to fraction form
    79,500.75/109,710.68 = 45,509.10/x
  3. Step 3: Cross multiply
    79,500.75x = 109,710.68 × 45,509.10
  4. Step 4: Simplify right side
    79,500.75x = 4,992,834,307.19
  5. Step 5: Solve for x
    x = 4,992,834,307.19/79,500.75
  6. Step 6: Final answer
    x = 62,802.35

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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.