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Finding the Fourth Proportional to 78,259.66, 108,000.18 and 47,622.22

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Solution

The fourth proportional to 78,259.66, 108,000.18 and 47,622.22 is: 65,719.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,259.66 : 108,000.18 = 47,622.22 : x
  2. Step 2: Convert to fraction form
    78,259.66/108,000.18 = 47,622.22/x
  3. Step 3: Cross multiply
    78,259.66x = 108,000.18 × 47,622.22
  4. Step 4: Simplify right side
    78,259.66x = 5,143,208,332.00
  5. Step 5: Solve for x
    x = 5,143,208,332.00/78,259.66
  6. Step 6: Final answer
    x = 65,719.79

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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.