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Finding the Fourth Proportional to 76,852.70, 106,064.88 and 45,048.32

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Solution

The fourth proportional to 76,852.70, 106,064.88 and 45,048.32 is: 62,171.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,852.70 : 106,064.88 = 45,048.32 : x
  2. Step 2: Convert to fraction form
    76,852.70/106,064.88 = 45,048.32/x
  3. Step 3: Cross multiply
    76,852.70x = 106,064.88 × 45,048.32
  4. Step 4: Simplify right side
    76,852.70x = 4,778,044,655.00
  5. Step 5: Solve for x
    x = 4,778,044,655.00/76,852.70
  6. Step 6: Final answer
    x = 62,171.46

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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.